| Effect of maternal vitamin A supplementation on vitamins A and E in breast milk. | Assessment of maternal vitamin A supplementation on the retinol levels and alpha-tocopherol in human milk. | RBR-4v7j2d |
| Study of Vitamin A and Carbomer in Comforting the Ocular Surface Irritations of Glaucoma Patients | | NCT02077231 |
| The effect of vitamin A in the treatment of idiopathic persistent microscopic hematuria in children 5 to 12 years old | The effect of vitamin A in the treatment of idiopathic persistent microscopic hematuria in children 5 to 12 years old | IRCT2014091013366N3 |
| Using Stable Isotope Techniques to Monitor and Assess the Vitamin A Status of Children Susceptible to Infection | Using Stable Isotope Techniques to Monitor and Assess the Vitamin A Status of Children Susceptible to Infection in Ethiopia | NCT02363985 |
| Oral Vitamin A Supplementation in Neonates With Birth Weight < 1500 g | Oral Vitamin A Supplementation in Neonates With Birth Weight < 1500 g Efficacy and Tolerability in the Prevention of Bronchopulmonary Dysplasia (BDP) and Retinopathy of the Prematurity (ROP) | NCT02102711 |
| Effect of combination therapy of Methotrexate with Vitamin A , in patients with low risk GTN (Gestational Trophoblastic Neoplasia) | The effect of vitamin A on the Gestational Trophoblastic Neoplasia low risk pregnancy | IRCT2013120615676N1 |
| Zinc, Iron, Vitamin A and Psychosocial Care for Child Growth and Development | Zinc, Iron and Vitamin A Supplementation for Infant Growth and Development, and the Contributing Role of Psychosocial Care | NCT02319499 |
| Comparing the effectiveness of ophthalmic vitamin A ointment and moisture chamber to prevent ocular surface disorders in critically ill patients | Comparing the effectiveness of ophthalmic vitamin A ointment and moisture chamber to prevent ocular surface disorders in critically ill patients | IRCT201402116318N3 |
| Effectiveness of a maternal food based intervention in the 3rd trimester till one month post partum to increase vitamin A intakes through breast milk in early infancy. | Effectiveness of a maternal food based intervention to increase vitamin A intakes in early infancy | CTRI/2015/06/005834 |
| Effect of Intervention on Vitamin A and iron nutritional status among primitive tribal children in Nilgiris district | Effect of Intervention on VitA and iron nutritional status among primitive tribal children in Nilgiris district | CTRI/2015/02/005546 |
| Saliva for Assessment of Vitamin A status in preterm Infants | Vitamin A status assessment using saliva versus blood in preterm infants. | ACTRN12615000658516 |
| Vitamin A Supplementation in Newborns Study | Vitamin A Supplementation in Newborns Study | NCT00114868 |
| Combined consumption of a single high-dose vitamin A supplement and provision of vitamin A fortified oil to households maintains adequate milk retinol | Combined consumption of a single high-dose vitamin A supplement and provision of vitamin A fortified oil to households maintains adequate milk retinol concentrations for 6 months in lactating Moroccan women | PACTR201512001217212 |
| Estimation of Vitamin A Stores in Children and Women in Guatemala and Relation With Potential Toxicity Markers | LOAEL/NOAEL and UL Determination in Guatemala - Estimation of Vitamin A Stores in Children and Women and Correlation With Potential Toxicity Markers | NCT03345147 |
| The effects of ORS with probiotics, zinc and vitamin A on diarrhea in children | Evaluation of The effect of ORS with probiotics, zinc and vitamin A on diarrhea in children, a double blind clinical trial | IRCT2017010312437N2 |
| Vitamin A Kinetics and Mathematical Modeling in American Women | Vitamin A Kinetics and Mathematical Modeling in American Women | NCT03248700 |
| Effect of eye ointmet lubratex in the prevetion ocular surface disorders (OSD) | Comparison of ocular lubratex and ocular vitamin A ointment in the prevention of ocular surface disorders (OSD) in Intensive Care Unit, A Randomized Clinical Trial | IRCT2017040733278N1 |
| Using Stable Isotope Techniques to Monitor & Assess the Vitamin A Status of Children Susceptible to Infection | Using Stable Isotope Techniques to Monitor & Assess the Vitamin A Status of Children Susceptible to Infection | NCT03194724 |
| Vitamin A and D Intake in Pregnancy, Infant Supplementation and Asthma Development | Norwegian Mother and Child Study - Causal Pathways for Asthma (CASPAR) | NCT03197233 |
| Process evaluation on task-shifting of administration of Vitamin A supplement for children 6-59 months to include village health workers in Zimbabwe | Process evaluation on task-shifting of the administration of Vitamin A supplement for children 6-59 months to include village health workers in Zimbabwe | PACTR201706002335281 |
| Effects of Early Vitamin A Supplementation on the Risk for Retinopathy of Prematurity in Extremely Preterm Infants | | NCT03154723 |
| Adrenal Cortical Function and Vitamin A Deficiency in Sepsis | Adrenal Cortical Function and Vitamin A Deficiency in Sepsis, Severe Sepsis and Septic Shock: Prospective Randomized, Double Blind Placebo Controlled Clinical Trials | NCT03152474 |
| Effect of oral Vitamin A Supplementation in tiny babies. | Oral Vitamin A Supplementation in Very Low Birth Weight Neonates: A Randomized Controlled Trial - OVASIN | CTRI/2017/03/008131 |
| Relationship between Vitamin A or Vitamin D deficiency and ocular common diseases in children | Relationship between Vitamin A or Vitamin D deficiency and ocular common diseases in children | ChiCTR-ONRC-14004251 |
| Efficacy of Vitamin A Fortified Rice in Lactating Thai Women | Efficacy of Vitamin A Fortified Rice in Lactating Thai Women | NCT03056625 |
| Vitamin A Replacement in Patients Undergoing HSCT and Its Role on MBI-LCBI Rates | Single, High Dose Vitamin A Replacement in Patients Undergoing Hematopoietic Stem Cell Transplantation and Its Role on MBI-LCBI Rates | NCT03039257 |
| Vitamin A and Azithromycin for Acne Vulgaris | Treatment of Acne for Cases Resistant to Currently Available Measures Via Vitamin A With or Without Azithromycin in Topical Formulations | NCT03090048 |
| Vitamin A Total Body Stores of Senegalese Children in Relation to Their Infectious Status | Using Stable Isotope Techniques to Monitor and Assess the Vitamin A Status of Children Susceptible to Infection in Senegal | NCT03207308 |
| Vitamin A Requirement Assessed by Isotope Dilution Technique and Vitamin A Intervention Trial | Vitamin A Requirement Assessed by Isotope Dilution Technique and Vitamin A Intervention Trial | ChiCTR-IOD-17010348 |
| The effect of vitamin A on the mucosal immune system | The effect of vitamin A supplementation immunoglobulin A, cortisol and total protein | IRCT2016082929599N1 |
| Total Body Vitamin A Before and After Vitamin A Supplementation in a Community Where Liver is Frequently Eaten | Total Body Vitamin A Pool Size in Preschool Children Before and After Vitamin A Supplementation in an Impoverished South African Community Where Liver is Frequently Eaten and Children Exposed to Vitamin A Fortified Staple Foods | NCT02915731 |
| The Effect of Vitamin A With and Without Zinc and Multivitamin Supplementation on Malaria Morbidity in Ghanaian Children | The Effect of Vitamin A With and Without Zinc and Multivitamin Supplementation on Malaria Morbidity in Ghanaian Children | NCT02878265 |
| Efficacy of Biofortified Maize to Improve Maternal and Infant Vitamin A Status | Efficacy of Biofortified Maize to Improve Maternal and Infant Vitamin A Status | NCT02804490 |
| Effect of oral vitaminA and d supplementation in very low birth weight infants | Effect of oral vitamin A and D supplementation in very low birth weight infants | TCTR20160416001 |
| Clinical research of the efficacy and safety of Vitamin A acid combined with Rd scheme in multiple myeloma patients with the drug lenalidomide resistance,Single center, single arm, prospectie ? studies | Clinical research of the efficacy and safety of Vitamin A acid combined with Rd scheme in multiple myeloma patients with the drug lenalidomide resistance,Single center, single arm, prospectie ? studies | ChiCTR-OIN-16008243 |
| Oral vitamin A for prevention of bronchopulmonary dysplasia in extremely preterm infants: a randomised controlled trial | Oral (enteral) vitamin A for prevention of bronchopulmonary dysplasia in extremely preterm infants: a randomised controlled trial | ACTRN12616000408482 |
| The Efficacy of Pro-vitamin A Biofortified Cassava on Vitamin A Status in Nigerian Preschool Children | The Efficacy of Pro-vitamin A Biofortified Cassava on Vitamin A Status in Nigerian Preschool Children | NCT02627222 |
| Comparing the Effectiveness of vitamin A eye oinment with eyelid taping in the prevention of ocular surface disorder . | Comparing the Effectiveness of vitamin A eye oinment with eyelid taping in the prevention of ocular surface disorder in patients hospitalized in intensive care unit | IRCT2015110124815N1 |
| comparing the efficacy of two doses of vitamin A in preterm infants | comparing the efficacy of high and low doses of vitamin A in prevention of bronchopulmonary dysplasia in preterm infants | IRCT201505253915N17 |
| Effect of Hookworm Elimination and Vitamin A Intervention on Iron Status of Preschool Children in Sichuan, China | Chengdu Women's and Children's Central Hospital | NCT02675140 |
| Stopping Postpartum Vitamin A Supplementation: Missing Concealed Benefit | Stopping Postpartum Vitamin A Supplementation: Are we Missing Concealed Benefit? | NCT02043223 |
| Deworming and Vitamin A (DEVTA) Prepilot Study | To Assess the Effectiveness of Six-Monthly Deworming With Vitamin A Administration on Growth in 1-5 Year Old Children in the Urban Slums of Lucknow | NCT00396500 |
| Role for Vitamin A and Zinc in treatment of children with pneumonia | Vitamin A and Zinc as adjuncts in treatment of children with acute lower respiratory tract infection | CTRI/2013/03/003463 |
| Impact of the WHO Recommended Vitamin A Supplementation at Immunisation Contacts | Evaluation of the Impact on Mortality and Morbidity of the WHO Recommended Vitamin A Supplementation at First Immunisation Contact After 6 Months of Age | NCT00514891 |
| Evaluation of the effect of vitamin E supplementation on vitamin A values of mother and child | Evaluation of maternal vitamin E supplementation on retinol levels in serum and breast milk | RBR-6ys9yp |
| A Study on Immunological Effect of Vitamin A and Zinc in a Placebo Controlled 4 Cell Trial | | NCT00374023 |
| Effect of Zinc and Vitamin A Supplementation on Diarrhea, Physical Growth and Immune Response in Malnourished Children | Effect of Zinc and Vitamin A Supplementation on Diarrhea, Physical Growth and Immune Response in Malnourished Children | NCT00272116 |
| Optimisation of vitamin A dosing schedules in infancy | | ISRCTN98554309 |
| Does additional vitamin A supplementation improve retinal function and conjunctival health in very low birth weight infants? - vitamin A and retinal function in low birth weight infants | Does additional vitamin A supplementation improve retinal function and conjunctival health in very low birth weight infants? - vitamin A and retinal function in low birth weight infants | EUCTR2005-003402-29-GB |
| Vitamin A and Zinc: Prevention of Pneumonia (VAZPOP) Study | Vitamin A and Zinc: Prevention of Pneumonia (VAZPOP) Study | NCT00228254 |
| Deworming and Enhanced Vitamin A Every 6 Month in Rural Indian Children Aged 1-6 | Deworming and Enhanced Vitamin A Supplementation DEVTA Project | NCT00222547 |
| Comparison of the Cosmetic Effects of Bakuchiol and Retinol | Comparison of the Cosmetic Effects of Bakuchiol and Retinol | NCT03112863 |
| Moderate iron supplementation can improve both hematologic status and oxidative stress in anemic pregnant women | Effect of vitamin A and B2 supplementation added to iron on anemia of pregnant women in China | ChiCTR-TNC-10001010 |
| Trial of the Impact of Vitamin A on Maternal Mortality | Randomised Double-blind Placebo-controlled Trial to Evaluate the Impact of Vitamin A on Maternal Mortality in Ghana | NCT00211341 |
| Different Doses of Vitamin A and Childhood Morbidity and Mortality | Randomised Study of the Impact of Different Doses of Vitamin A on Childhood Morbidity and Mortality | NCT00168584 |
| The effect of vitamin A and zinc supplementation on the bacteriological response of persons with pulmonary tuberculosis in the Western Cape | The effect of vitamin A and zinc supplementation on the bacteriological response of persons with pulmonary tuberculosis in the Western Cape | ISRCTN80852505 |
| Different Doses of Vitamin A Supplementation and Male and Female Morbidity and Mortality | The Impact of Different Doses of Vitamin A Supplementation on Male and Female Childhood Morbidity and Mortality | NCT00168636 |
| Vitamin A and Response to Endotoxin | The Effect of Vitamin A on the Response to Endotoxin | NCT00168649 |
| Vitamin A With BCG Vaccine | Should Infants Receive High-dose Vitamin A Supplementation With BCG Vaccine at Birth in Developing Countries? | NCT00168597 |
| Vitamin A Supplementation With Bacille Calmette Guerin (BCG) Vaccine | Should Infants Receive High-dose Vitamin A Supplementation With BCG Vaccine at Birth in Developing Countries? Randomized Prospective Studies in Guinea-Bissau | NCT00168610 |
| Efficacy of a micronutrient fortified seasoning powder on micronutrient status, health, and physical and cognitive development of North East Thai primary school children. | Randomized controlled trial of the efficacy of a seasoning powder fortified with iron, zinc, vitamin A, and iodine on biochemical indices, growth and body composition, morbidity, and cognitive function of primary school children from North East Thailand. | ACTRN12605000341628 |
| Community Trial of Newborn Vitamin A Supplementation to Reduce Infant Mortality in Rural Bangladesh | A Randomized Community Trial of Newborn Vitamin A Supplementation to Reduce Infant Mortality in Rural Bangladesh | NCT00128557 |
| Beta carotene absorption and vitamin A status in humans | Measuring beta-carotene bioavailability, bioconversion and vitamin A status in humans. | CTRI/2020/11/029135 |
| Prevention of vitamin A deficiency by supplementation alongside routine vaccinations: a randomised controlled trial in Ghana infants | | ISRCTN97670178 |
| Prevention of vitamin A deficiency by supplementation alongside routine vaccinations: a randomised controlled trial in Tanzanian infants | | ISRCTN83465214 |
| Assessment of serological responses to Hepatitis B and Hib vaccines in infants receiving vitamin A (Ghana) | Assessment of serological responses to Hepatitis B and Hib vaccines in infants receiving vitamin A (Ghana) | ISRCTN28820504 |
| Investigating the Effect of Vitamin A Supplementation on Retinitis Pigmentosa | Pilot Study on the Effect of Vitamin A Supplementation on Cone Function in Retinitis Pigmentosa | NCT00065455 |
| Vitamin A Supplementation in Preterm Infants | Vitamin A Therapy in Preterm Infants: Vaccine Response | NCT00063596 |
| Vitamin A to Reduce HIV in Vaginal Secretions and Prevent Viral Transmission | Prevention of HIV Shedding in Women - Trial of Vitamin A | NCT00053612 |
| Vitamin A Supplementation With Routine Childhood Vaccines and Mortality and Morbidity | Randomised Trial of Vitamin A Supplementation Given With Routine Childhood Vaccines at National Immunisation Days | NCT00168623 |
| Vitamin A Supplementation for Modulation of Mycobacterium Tuberculosis Immune Responses in Latent Tuberculosis | A Double Blind, Placebo Controlled Randomized Trial of Vitamin A Supplementation for Modulation of Mycobacterium Tuberculosis Immune Responses in Children Aged 5-14 Years With Latent Tuberculosis. | NCT00558480 |
| Newborn Vitamin A (VA) Supplementation Pilot Project, Pakistan | Evaluation of the Effectiveness of Vitamin A Supplementation (VAS) as Part of a Neonatal Post Partum Care Package in Rural Pakistan | NCT00674089 |
| Effect of Vitamin A in the Treatment of Neonatal Sepsis and Necrotizing Enterocolitis | Effect of Vitamin A in the Treatment of Sepsis and Necrotizing Enterocolitis in Hospitalized Neonates | NCT00707785 |
| Determination of Changes in Total Body Stores of Vitamin A in Response to Orange Maize Consumption by Zambian Children | Determination of Changes in Total Body Stores of Vitamin A in Response to Orange Maize Consumption by Zambian Children | NCT01814891 |
| Evaluation of Vitamin A and Zinc Supplementation on Malarial Morbidity | Evaluation of the Impact of Vitamin A and Zinc Supplementation on Malarial Morbidity in Ghana | NCT01782001 |
| The evaluation of the effect of vitamin A on watery diarrhea in children between 1-5 years old | The evaluation of the effect of vitamin A on watery diarrhea in children between 1-5 years old | IRCT2012102411145N2 |
| Effects of Fortified Complementary Foods on Vitamin A Status and Body Pool Size in Ghanaian Infants. | A Randomised Controlled Home-based Trial of the Effects of Fortified Complementary Foods on Vitamin A Status and Body Pool Size in Ghanaian Infants. | NCT01751009 |
| Impact of Vitamin A on RAR Gene Expression in Multiple Sclerosis | Impact of Vitamin A Supplementation on RAR Gene Expression in PBMC Cells in Multiple Sclerotic Patients | NCT01705457 |
| Efficacy of vitamin A and zinc supplementation on pathogen-specific diarrheal disease. | Are pathogen-specific diarrhoeal disease rates lower among young children who receive vitamin A and zinc supplements separately or in combination compared to children receiving a placebo | ACTRN12612000497808 |
| Zinc supplementation trial before and after routine vitamin A supplementation program and their effects on illness in Indonesian preschool children | The effect of zinc supplementation and its interaction with vitamin A on child immune response and morbidity rate in Indonesian preschool children | ACTRN12611000659909 |
| Effect of Vitamin A Supplementation on Iron Metabolic Homeostasis of Preschool Children in Sichuan,China | Effect of Vitamin A Supplementation on Iron Metabolic Homeostasis of Preschool Children in Sichuan,China | NCT01355263 |
| The Effect of Vitamin A Supplementation on Cytokine Profile in Obesity | The Effect of Vitamin A Supplementation on CD4+ T-cell Secretion in Obese Individuals | NCT01405352 |
| Impact of Vitamin A on Gene Expression, in Multiple Sclerosis Patient | The Impact of Vitamin A Supplementation on Gene Expression of Cytokine Secreted by CD4+ T Lymphocyte in Multiple Sclerosis Patients | NCT01407211 |
| The Effect of Vitamin A on Atherosclerosis | The Effect of Vitamin A Supplementation on Gene Expression of Cytokine Secreted by T CD4+ Lymphocyte in Atherosclerotic Patients | NCT01414972 |
| Intratracheal Vitamin A Administration With Surfactant for Newborn Respiratory Distress Syndrome | Intratracheal Vitamin A Administration With Surfactant for Newborn Respiratory Distress Syndrome | NCT01265589 |
| Impact of Vitamin A on Multiple Sclerosis (MS) | Impact of Vitamin A Supplementation on Disease Activity and Progression in Multiple Sclerotic (MS) Patients | NCT01417273 |
| Effect of vitamin A supplementation on immune system indices in patients with ulcerative colitis | Effect of vitamin A supplementation on immune system indices in patients with ulcerative colitis | IRCT201008184105N3 |
| Vitamin A Supplementation for Extremely-Low-Birth-Weight Infants | Randomized Trial of Vitamin A Supplementation for Extremely-Low-Birth-Weight | NCT01203488 |
| Sub-clinical Inflammation and Iron Supplementation | The Role of Sub-clinical Inflammation on the Iron Status of Myanmar Anaemic Adolescent Schoolgirls During Iron and Vitamin A Supplementation | NCT01198574 |
| Impact of Vitamin A Supplementation on Immune System in Multiple Sclerosis Patients | The Study of the Effects of Vitamin A Supplementation on Immune System and Th1/Th2 Balance in Patients With Multiple Sclerosis | NCT01225289 |
| Efficacy of Vitamin A in Fortified Extruded Rice in School Children | Efficacy of Vitamin A in Fortified Extruded Rice in School Children in Satun, Thailand | NCT01199445 |
| Efficacy of newborn vitamin A supplementation in improving child survival in rural Ghana | Efficacy of newborn vitamin A supplementation in improving child survival in rural Ghana: generation of evidence necessary for informing global policy | ACTRN12610000582055 |
| A Community Trial for Visceral Leishmaniasis (VL) | A Randomized, Double Blind, Community Trial to Assess the Efficacy of a Combination of Anti-helminth, and Vitamin A, Zinc and Iron Supplementation in Preventing Visceral Leishmaniasis (VL) Disease Among Asymptomatic Individuals With VL | NCT01069198 |
| The Study of the Effects of Vitamin A on Immune System in Patients With Atherosclerosis | The Study of the Effects of Vitamin A Supplementation on Immune System and Th1/Th2 Balance in Patients With Atherosclerosis | NCT00963222 |
| Making Maternal Post-partum Vitamin A Supplementation Effective: The Role of Timing and Inflammation | Making Maternal Post-partum Vitamin A Supplementation Effective: The Role of Timing and Inflammation. | NCT00952640 |
| To determine if the addition of weekly zinc and weekly zinc plus vitamin A to routine tuberculosis (TB) treatment improves the outcome of the treatment in Nigeria | Diagnosis of tuberculosis and the role of micronutrients in the treatment of pulmonary tuberculosis (PTB) in Nigeria: a double-blinded, placebo-controlled, multicentre, supplementation clinical trial | ISRCTN36636609 |
| Effects of Vitamin A Supplementation on Intestinal Parasitic Reinfections | Effects of Vitamin A Supplementation on Intestinal Parasitic Reinfections, Growth, Iron Status and Educational Achievement Among Orang Asli Schoolchildren in Pos Betau, Pahang, Malaysia | NCT00936091 |
| A clinical trial to study the effect of vitamin A supplementation in babies with birth weight from 750 grams to 1250 grams | A randomized controlled trial of vitamin A supplementation in babies with birth weight from 750 to 1250 grams | CTRI/2009/091/000010 |
| Vitamin A and Maternal-infant Flu Vaccine Response | Effect of Maternal Vitamin A Supplementation on Maternal Immune Response to Inactivated Influenza Vaccination, and on Passive Protection of Infants | NCT00817661 |
| Impact of Maternal Supplementation With Dual Megadose of Vitamin A | Impact of Supplementation With Dual Megadose of Vitamin A in the Post-partum About Vitamin A Levels in Breast Milk, Serum Levels of Vitamin A and Iron in the Binomial Mother-son and Growth and Morbidity of Children Under 6 Months | NCT00742937 |
| Effect of Daily Consumption of Orange Maize on Breast Milk Retinol in Lactating Zambian Women | Effect of Daily Consumption of ß-carotene Biofortified Maize on Milk Retinol Concentration in Lactating Zambian Women | NCT01922713 |
| The effects of Zn, vitamin A and magnesium supplementation on patients with hypothyroidism | The effects of Zn, vitamin A and magnesium supplementation on anthropometric parameters, metabolic, thyroid hormones, oxidative stress and hs-CRP in patients with hypothyroidism | IRCT201709042365N17 |
| High Dose Vitamin A Compound in Treating Participants With Resectable Non-Small Cell Lung Cancer | A Pilot Study of Neoadjuvant High Dose Vitamin A for Resectable Non-Small Cell Lung Cancer | NCT03870529 |
| Vitamin-A status in tuberculous children | Optimizing the Stable Isotope Dilution Technique to Assess Total Body Vitamin A Stores in the Context of TB Infection in Moroccan children. | PACTR201711002800419 |
| Randomized Trial of Vitamin A and Vitamin E Supplementation for Retinitis Pigmentosa | | NCT00000114 |
| Effect of Maternal Supplementation with Vitamin A, offered at different intervals, on vitamin A concentrations in breast milk and on the nutritional status of the mother and baby | Impact of Maternal Supplementation with Double Megadose of Vitamin A administered at different intervals on the composition of the mother's milk and nutritional status of the mother-child binomial | RBR-5xgjwm |
| 48-hours Moisturization Activity of Piramal Lacto calamine Retinol Gel | A Clinical Study to Evaluate the 48-hours Moisturization Potential of Piramal Lacto calamine Retinol Gel on Healthy Human Subjects - NIL | CTRI/2024/11/077248 |
| The Role of Skin Microbiota in Establishing Retinol Tolerance and Achieving Anti-Aging Effects of Retinol | The Role of Skin Microbiota in Establishing Retinol Tolerance and Achieving Anti-Aging Effects of Retinol | ChiCTR2400089010 |
| To study the efficacy of Retinol Serum for skin Brightening | A Clinical Study to evaluate the efficacy of skin Renew Peptide Retinol Serum for skin Brightening - NIL | CTRI/2024/04/066514 |
| Impact of Maternal Vitamin A or Beta-Carotene Supplementation on Maternal and Infant Mortality in Bangladesh | Impact of Maternal Vitamin A or Beta-Carotene Supplementation on Maternal and Infant Mortality in Bangladesh | NCT00198822 |
| Efficacy of Newborn Vitamin A Supplementation in Improving Immune Function | Efficacy of Newborn Vitamin A Supplementation in Improving Immune Function | NCT01583972 |
| Parenteral Retinol Level and Tolerability Trial | A Phase 2a, Open-label, Single-Arm Study Investigating Tolerability of IV/IM Administration of RetinolX (retinol palmitate) in Preterm Infants, and Measuring Serum Levels of Retinol, Retinol Palmitate and Retinol Binding Protein (RBP4) (PARELETO - Trial) - ASP-RET-CT001 | CTIS2024-516994-59-00 |
| Impact of Consumption of Orange-fleshed Sweet Potatoes on the Vitamin A Status of Bangladeshi Women of Reproductive Age | Efficacy of Daily Consumption of Sweet Potatoes for Increasing Total Body Vitamin A Pool Size, and the Effect of Consumption of Sweet Potatoes on Iron and Zinc Absorption in Bangladeshi Women of Reproductive Age | NCT00453648 |
| Single center, randomized, double-blind, placebo-controlled clinical trial of lutein, zinc gluconate and vitamin A soft capsules for eye protection in patients with type II diabetes | Single center, randomized, double-blind, placebo-controlled clinical trial of lutein, zinc gluconate and vitamin A soft capsules for eye protection in patients with type II diabetes | ChiCTR2500095624 |
| The CARO Study - Bioefficacy of Beta-Carotene in Oil and in a Mixed Diet in Healthy Subjects | Bioefficacy and Bioavailability of Beta-Carotene in Oil and in a Mixed Diet in Healthy Subjects Measured Using Specifically 13C-Labelled Beta-Carotene and Retinol | NCT00128752 |
| COMPARATIVE STUDY OF THE EFFICACY AND SAFETY OF 10% RETINOL PEEL AND 70% GLYCOLIC ACID PEEL IN THE TREATMENT OF ACANTHOSIS NIGRICANS | An observational study of the efficacy and safety comparing 10% Retinol peel and 70% Glycolic acid peel in the treatment of Acanthosis Nigricans | CTRI/2023/09/057674 |
| The STOVITA Study - Bioefficacy of Beta-Carotene in Oil and in a Mixed Diet in Ileostomy Patients | Bioefficacy and Bioavailability of Beta-Carotene in Oil and in a Mixed Diet in Ileostomy Patients Measuring Using Specifically 13C-Labelled Beta-Carotene and Retinol | NCT00128804 |
| comparing the vitamin A Cream with drumstick plant extract gel in treatment of oral potentially malignant disorder-leukoplakia | Comparison of effectiveness of Moringa oleifera leaves extract gel [2%] with Retino A (0.1%) cream for treatment of oral leukoplakia - A double blinded randomised control trial | CTRI/2020/10/028529 |
| Prospective Study of Topical Adapinoid Versus Topical Retinol | Prospective, Double-Blinded, Randomized Head-to-Head Study of Topical Adapinoid Versus Topical Retinol | NCT05778760 |
| Comparison of vitamin A and cyclosporin 0.05% eye drops for treatment of dry eye syndrome | | ISRCTN47762748 |
| Effect of Protein and Retinol on Alcohol-induced FGF21 | Effect of Protein and Retinol on Alcohol-induced FGF21 | NCT06105476 |
| Periodontal Regeneration Using Vitamin A and PRF Compared to PRF Alone Treating Intra-bony Defects | Clinical Evaluation of Periodontal Regeneration Using Vitamin A Added to PRF in Comparison to PRF Alone in Treatment of Intra-bony Defects: Randomized Controlled Clinical Trial | NCT05285293 |
| 48-hours Moisturization Potential of Piramal Lacto calamine Retinol Gel | A Clinical Study to Evaluate the 48-hours Moisturization Potential of Piramal Lacto calamine Retinol Gel on Healthy Human Subjects - NIL | CTRI/2024/12/078451 |
| A study to check the effectiveness of a retinol serum with moisturizer in reducing early signs of aging. | A full face, randomized study to evaluate the efficacy and tolerance of regimen of Retinol Serum with Moisturizer versus Moisturizer alone in reducing early signs of ageing in Indian females over 8 weeks. - NIL | CTRI/2025/01/078903 |
| Vitamin A combined vitamin D supplementation could improve the immune response to Bacille Calmette-Guérin vaccine revaccinated in Chinese infants | Vitamin A combined vitamin D supplementation could improve the immune response to Bacille Calmette-Guérin vaccine revaccinated in Chinese infants | ChiCTR-TRC-12002489 |
| Comparison of the therapeutic effect of Vaseline and Sterile ophthalmic Vitamin A ointment in treatment of Lip dryness | Double blind Randomized Clinical trial of Comparison between Vaseline and Sterile Ophthalmic Vitamin A ointment effect, in treatment of Exfoliative Cheilitis in Girls Dormitory of Shahid Sadoughi University of Medical Sciences | IRCT2014052717879N1 |
| Efficacy and safety assessment of retinol palmitate (Vitamin A) for acute brain infarction, phaseI and multi-center, randomized controlled, phaseII trial. | Efficacy and safety assessment of retinol palmitate (Vitamin A) for acute brain infarction, phaseI and multi-center, randomized controlled, phaseII trial. - Efficacy and safety assessment of retinol palmitate (Vitamin A) for acute brain infarction, phaseI and multi-center, randomized controlled, phaseII trial. | JPRN-UMIN000015513 |
| Effects of a Food for Special Medical Purposes containing D-Mannose, birch extract, vitamin D and vitamin A for the dietary management of acute symptomatic uncomplicated urinary tract infections in females - a randomized, double-blind, placebo-controlled, parallel-design study | Effects of a Food for Special Medical Purposes containing D-Mannose, birch extract, vitamin D and vitamin A for the dietary management of acute symptomatic uncomplicated urinary tract infections in females - a randomized, double-blind, placebo-controlled, parallel-design study - / | DRKS00013240 |
| Effect of SNPs in the BCMO1 Enzyme | Effect of SNPs in the Beta-carotene 15, 15'-Monooxygenase (BCMO1) Enzyme on Retinol Formation and Beta-carotene Plasma Responses | NCT02276014 |
| Genetic polymorphisms in a beta-carotene metabolising enzyme | Do genetic polymorphisms in a beta-carotene metabolising key enzyme influence dietary vitamin A requirements? | ISRCTN45245618 |
| Validation and Simplification of the Retinol Isotope Dilution Technique in Burkinabe Schoolchildren | Validation and Simplification of the Retinol Isotope Dilution Technique in Burkinabe Schoolchildren | NCT06759493 |
| Ocular complications following the use of Vitamin A and simple eye ointment in non- ophthalmic surgery | Comparison of ocular complications following the use of Vitamin A and simple eye topical ointment in non-ophthalmic surgery during general anesthesia | IRCT2014072418581N1 |
| A Randomized Trial of Vitamin D Supplementation With or Without Vitamin A in Stem Cell Transplantation | A Randomized Double Blinded Trial of Vitamin D Supplementation With or Without Vitamin A Supplementation in Allogeneic Stem Cell Transplantation | NCT03202849 |
| Carotene and Retinol Efficacy Trial | Caret and Retinol Efficacy Trial: The Caret Coordinating Center | NCT00712647 |
| skin saftey test of Maxnova Retinol Needle Serum | A Clinical Study to Evaluate the skin Irritation potential of Maxnova Retinol Needle Serum on Healthy Huaman Volunteers - NIL | CTRI/2025/05/087712 |
| Single-dose Postpartum Vitamin A Supplementation of Mothers and Neonates | Vitamin A Supplementation of Breast Feeding Mothers and Their Neonates at Delivery: Impact on Mother to Child Transmission of HIV During Lactation, HIV Infection Among Women During the Postpartum Year, and Infant Mortality. | NCT00198718 |
| Vitamin A Equivalence of Plant Carotenoids in Children | Phase 2 Study of VITAMIN A EQUIVALENCE OF PLANT CAROTENOIDS IN CHILDREN | NCT00680212 |
| A study to evaluate the efficacy and safety of applying a serum containing hydroxypinacolone retinoate and retinol in glycospheres in combination with a sunscreen containing polypodium leucotomos for the treatment of melasma in Asians | A study to evaluate the efficacy and safety of applying a serum containing hydroxypinacolone retinoate and retinol in glycospheres in combination with a sunscreen containing polypodium leucotomos for the treatment of melasma in Asians | TCTR20250210003 |
| The effect of vitamin A, B, C, D, and E supplementations in COVID-19 | The effect of vitamin A, B, C, D, and E supplementations on biochemical parameters of critically ill patients with COVID-19: A randomized clinical trial | IRCT20151226025699N5 |
| Oral vitamin A supllementation versus placebo for preventing for 28 days for preventing bronchopulmonary dysplasia (BPD) or death in extremely-low-birth-weight (ELBW) infants. | A prospective, multicenter, double blind, placebo-controlled, two-arm parallel group phase 3 trial to evaluate the effect of early postnatal additional high dose oral vitamin A supplementation of 5000 IU/kg/d versus placebo for 28 days for preventing bronchopulmonary dysplasia (BPD) or death in extremely-low-birth-weight (ELBW) infants. - NeoVitaA | EUCTR2013-001998-24-DE |
| Vitamin A Equivalence of the Provitamin A in Biofortified Bananas | | NCT02702622 |
| Observation of the safety and efficacy of vitamin C (C20) combined with retinol 1.0 on hyperpigmentation after inflammation | Observation of the safety and efficacy of vitamin C (C20) combined with retinol 1.0 on hyperpigmentation after inflammation | ChiCTR2100051389 |
| Treating discharge and discomfort of eye prosthesis: a comparison between vitamin A ointment, anti-inflammatory eye drops and standard eye drops | Treating socket discharge and discomfort: randomized test of vitamin A ointment, low-dose steroids and artificial tears | CTIS2023-504451-27-00 |
| Treating discharge and discomfort of eye prosthesis: a comparison between vitamin A ointment, anti-inflammatory eye drops and standard eye drops | Treating socket discharge and discomfort: randomized test of vitamin A ointment, low-dose steroids and artificial tears | CTIS2023-504451-27-01 |
| Clinical Trial of Lutein for Patients With Retinitis Pigmentosa Receiving Vitamin A | Randomized Clinical Trial for Retinitis Pigmentosa | NCT00346333 |
| The Effect of Combination of Vitamin A, Vitamin E, Sodium Hyaluronate 0.15% Eye Drop Compared With Sodium Hyaluronate 0.1% Eye Drop to Tear Film Stability and Conjunctival Goblet Cells Density in Patient With Non-Proliferative Diabetic Retinopathy (NPDR), and Proliferative Diabetic Retinopathy (PDR) | The Effect of Combination of Vitamin A, Vitamin E, Sodium Hyaluronate 0.15% Eye Drop Compared With Sodium Hyaluronate 0.1% Eye Drop to Tear Film Stability and Conjunctival Goblet Cells Density in Patient With Non-Proliferative Diabetic Retinopathy (NPDR), and Proliferative Diabetic Retinopathy (PDR) | NCT04000789 |
| Vitamin A Requirement Assessed by Isotope Dilution Technique and Beta-carotene Intervention Trial | Vitamin A Requirement Assessed by Isotope Dilution Technique and Beta-carotene Intervention Trial | ChiCTR-IOD-16009436 |
| The Correlation Between Vitamin A / E Levels and Preeclampsia | The Correlation Between Vitamin A / E Levels and Preeclampsia. | NCT03971604 |
| The MULTINUTRIENT Maize Project: Results of Human Feeding Trial | Bioavailability of Vitamin A From ß-carotene-Biofortified Maize Porridge Consumed by Women and Men: Results of a Randomized Crossover Trial | NCT02373943 |
| Can the drug Retinol Palmitate improve dryness and keratinization of the eye in patients with Chronic Stevens Johnson Syndrome | Evaluation of Retinol Palmitate Ophthalmic Suspension in Severe Dry Eye and Ocular Surface Keratinisation associated with Chronic Stevens Johnson Syndrome | CTRI/2021/11/038155 |
| Adjunctive vitamin A and vitamin D3 (Cholecalciferol) supplement in allergic rhinitis with allergen-specific immunotherapy, A randomized, double blind, placebo-controlled trial | Adjunctive vitamin A and vitamin D3 (Cholecalciferol) supplement in allergic rhinitis with allergen-specific immunotherapy, A randomized, double blind, placebo-controlled trial | TCTR20220228004 |
| No-tox Vs. Retinoid (Tretinoin) Study: Comparison of the wrinkle reduction performance of a cosmeceutical non-toxin based wrinkle-reducing serum against a pharmaceutical prescription-grade retinol | A randomised, controlled comparative study the wrinkle reduction benefits of No-Tox, a plukenetia/niacinamide/plankton-based topical cosmeceutical formulation vs. 0.5 mg (0.05% w/w) tretinoin, a pharmaceutical prescription-strength topical retinoic acid formulation in healthy adults | ACTRN12621001735842 |
| Vitamin A Value of Spirulina Carotenoids in Humans | Vitamin A Value of Spirulina Carotenoids in Humans | NCT00680277 |
| Prospective Study of Vitamin A and Vitamin D Treatment in Children with Autism Spectrum Disorders | Prospective Study of Vitamin A and Vitamin D Treatment in Children with Autism Spectrum Disorders | ChiCTR1800016113 |
| Vitamin A Absorption From Cassava in Women | Vitamin A Equivalence of Carotenoids From Cassava in Women | NCT01381276 |
| Effect of Vitamin A Supplementation on Immune Responses in Human Neonates | A Randomized Controlled Trial in Human Neonates to Determine the Effect of Vitamin A Supplementation on Immune Responses | NCT01476358 |
| Improving the nutrition of pregnant women through a multiple micronutrient fortified salt | A study to improve the vitamin A and iodine status of pregnant women through a multiple micronutrient fortified salt | ISRCTN17782574 |
| Relative-dose-response Test (RDR) Adaptation for Chronic Liver Disease | Responsiveness of RDR Test to Assess Hepatic Vitamin A Stores in Chronic Liver Disease | NCT01634698 |
| Efficacy of ß-carotene Biofortified Maize in Reducing Vitamin A Deficiency Among Children | Efficacy of ß-carotene Biofortified Maize in Improving Vitamin A Status and Reducing the Prevalence of Vitamin A Deficiency Among Children in Rural Zambia | NCT01695148 |
| Evaluation of a cosmetic gel containing retinol palmitate for its improvement effect on wrinkles | Evaluation of a cosmetic gel containing retinol palmitate for its improvement effect on wrinkles | JPRN-jRCTs031200260 |
| Topical Vitamin A Versus Vehicle Cream in the Treatment of Aged Skin | Topical Vitamin A (All-trans Retinol) Versus Vehicle Cream in the Treatment of Aged Skin | NCT00272610 |
| The Effect of 8 Weeks Interval Exercises and Vitamin D Supplementation on Plasma Levels of Dipeptidyl peptidase-4 and retinol binding protein 4 in Overweight Women | The Effect of 8 Weeks Interval Exercises and Vitamin D Supplementation on Plasma Levels of Dipeptidyl peptidase-4 and retinol binding protein 4 in Overweight Women | IRCT20170510033909N3 |
| Study to Identify if Chemist Confessions Retinol Cream Works to Improve the Appearance of Early Signs of Aging. | Study to Identify if Chemist Confessions Retinol Cream Works to Improve the Appearance of Early Signs of Aging. | NCT05039476 |
| Study To Investigate If Embody's Retinol Gummies Improve The Early Signs Of Skin Aging And Overall Skin Health | Study to Identify if Embody's Retinol Gummy Works to Improve the Appearance of Early Signs of Aging and to Examine if it Reduces the Overall Frequency and Intensity of Adult Acne. | NCT04884516 |
| Retinol Status in Preterm Infants and Mothers | The Effect of Retinol and RBP Levels of Cord Blood and Mothers on Mortality and Morbidity in Prematures With 30 Weeks and Lower | NCT04780958 |
| Adjuvant Effects of Vitamin A and Vitamin D Supplementation on Treatment of Children With ADHD | Adjuvant Effects of Vitamin A and Vitamin D Supplementation on Treatment of Children With ADHD:A Randomized, Double Blind, Placebo-controlled, Multicentric Trial. | NCT04284059 |
| Assessing Model Parameters for Applying the Retinol Isotope Dilution (RID) Method | Assessing Model Parameters for Applying the Retinol Isotope Dilution (RID) Method in Preschool Nigerian Children Living in an Area With a High Malaria Burden | NCT02996513 |
| Retinol on Human Skin Aging in East Asian Descent | Discovery of Effects of Retinol on Human Skin Aging in Individuals of East Asian Descent | NCT02906566 |
| Vitamin A Bioavailability in Lactating Women With Marginal Vitamin A Status | Impact of Daily Feeding of Food Sources of Cryptoxanthin (CX) and Beta-carotene (BC) on Plasma and Breast Milk Concentrations of CX, BC, and Retinol (VA) in Lactating Women With Marginal Vitamin A Status | NCT01420406 |
| Vitamins in Prevention of Renal Scars in Pyelonephritis | The Effect of Vitamin E and Vitamin A on the prevention of renal scarring according to DMSA findings in children with acute pyelonephritis | IRCT201103256102N1 |
| The Dark-Adapted Retinal Function Response in Choroideremia (DARC) Study | Characterization of Night Vision Impairment in Choroideremia and Short-Term Vitamin A Supplementation: The Dark-Adapted Retinal Function Response in Choroideremia (DARC) Study | NCT05045703 |
| Efficacy of Newborn Vitamin A Supplementation Versus Placebo in Improving Child Survival (NeoVitA Trial) | Efficacy of Neonatal Vitamin A Supplementation in Improving Child Survival in Haryana, India: Generation of Evidence Necessary for Informing Global Policy | NCT01138449 |
| Efficacy of newborn vitamin A supplementation versus placebo in improving child survival in Tanzania | Efficacy of newborn vitamin A supplementation in improving child survival in Tanzania: generation of evidence necessary for informing global policy. | ACTRN12610000636055 |
| Comparison of Retinol 1.0% and Tretinoin 0.02% in the Treatment of Moderate to Severe Photodamage and Wrinkles | Double-blinded, Single-center, Parallel-arm Comparison Study of Retinol 1.0% and Tretinoin 0.02% in the Treatment of Moderate to Severe Photodamage | NCT01283464 |
| The effect of vitamin A in patients with sinusitis with nasal polyps | A prospective open-label randomized trial of tretinoin in patients with chronic rhinosinusitis with nasal polyps | RBR-36y8cw |
| Effects of Topical Vitamin K, Vitamin K and Retinol, and Arnica on Post-Laser Bruising | Effects of Topical Vitamin K, Vitamin K and Retinol, and Arnica on Post-Laser Bruising | NCT00363038 |
| Pilot Trial of Supplemental Vitamin A and Nicotinamide | Pilot Trial of Supplemental Vitamin A and Nicotinamide and Levels of Blood Vitamin A and Nicotinamide | NCT05702398 |
| Efficacy and tolerability of 0.2% hyaluronic acid and 2% ectoin topical eye drops, Vitamin A ointment, and lid wipe in post-COVID Meibomian Gland Dysfunction (MGD): a 3-arm randomized clinical trial | Efficacy and tolerability of 0.2% hyaluronic acid and 2% ectoin topical eye drops, Vitamin A ointment, and lid wipe in post-COVID Meibomian Gland Dysfunction (MGD): a 3-arm randomized clinical trial | ChiCTR2300067758 |
| Nutritional Outcomes After Vitamin A Supplementation in Subjects With SCD | Vitamin A in Sickle Cell Disease: Improving Sub-optimal Status With Supplementation | NCT03632876 |
| Assessment of a Combined Strategy of SMC + Nutrients Supplementation to Tackle Malaria and Malnutrition | Assessment of a Combined Strategy of Seasonal Malaria Chemoprevention + Supplementation With PlumpyDoz and Vitamin A-Zinc to Prevent Malaria and Malnutrition in Burkina Faso | NCT04238845 |
| Investigating the effect of vitamin A and coronet in the treatment of kidney scar | Investigating the effect of vitamin A and Corticosteroid in reducing renal scarring in patients with acute pyelonephritis: a double-blind randomized clinical trial study with a control group | IRCT20180519039715N5 |
| Vitamin A regulating Th17 cells/IL-17A immune pathway and their roles in the pathogenesis of autism spectrum disorder | Vitamin A regulating Th17 cells/IL-17A immune pathway and their roles in the pathogenesis of autism spectrum disorder | ChiCTR2300068794 |
| Bioavailability and Vitamin A equivalence of carotenoids from biofortified maize. Here in we will assess the relative absorption of carotenoids from biofortified maize lines compared to beta-carotene standard in adult human subjects. | Bioavailability and Vitamin A equivalence of carotenoids from biofortified maize in humans | CTRI/2022/09/045367 |
| Evaluation of the effect of saffron extract and vitamin A supplement in the control and treatment of dry eye symptoms | Evaluation of the effect of saffron extract and vitamin A supplement in the control and treatment of dry eye symptoms in patients referred to the Visual Health Center | IRCT20210926052587N1 |
| A randomized controlled trial of vitamin A softgels for open-angle glaucoma | A randomized controlled trial of vitamin A softgels for open-angle glaucoma | ChiCTR2200058708 |
| The Effect of Vitamin A Paimitate Eye Gel on Corneal Abrasions During General Anesthesia | The Effect of Vitamin A Paimitate Eye Gel on Corneal Abrasions During General Anesthesia | ChiCTR2100052140 |
| A clinical trial to evaluate the effects of Vitamin A supplementation in children with acute lower respiratory tract infection with wheeze. A randomized double blind trial. | Effect of Vitamin A supplementation in children with acute lower respiratory tract infection with wheeze. A randomized double blind trial. | CTRI/2021/10/037192 |
| Estimating Average Vitamin A Requirements in Indonesian and American Women | Development of 13C-Retinol Isotope Dilution Techniques | NCT04123210 |
| Effect of oral vitamin A versus control group in the prevention of retinopathy of prematurity in low birth weight neonates | Effect of oral vitamin A versus control group in the prevention of retinopathy of prematurity in low birth weight neonates: a double-blind randomized clinical trial | IRCT20120215009014N403 |
| The vitamin A supplementation in COVID-19 patients | Effect of vitamin A supplementation on blood inflammatory markers in COVID-19 patient with heart failure | IRCT20200826048535N1 |
| Vitamin A for viral smell loss | A proof-of-concept study for vitamin A nasal drops in post-viral olfactory loss | ISRCTN13142505 |
| Nutrition in Tuberculosis | Vitamin A and Zinc-Enriched Nutrient Supplementation for Recovery Enhancement in patients with Tuberculosis (VZ-ENSURE): A Quasi Experimental Study - VZ-ENSURE | CTRI/2021/07/034861 |
| Vitamin A Supplementation in Children With Moderate to Severe COVID-19 | The Effect of Vitamin A Supplementation on Disease Improvement of Children With Moderate to Severe COVID-19. | NCT04920760 |
| The effect of vitamin A supplementation in outpatients with COVID-19 | Comparing the effect of standard treatment with and without vitamin A supplementation in improving the clinical symptoms of outpatients with COVID-19 | IRCT20210102049912N1 |
| The effect of olfactory training and vitamin A in the olfactory loss of patients with covid-19. | A comparative study of the effect of olfactory training and vitamin A in the olfactory loss of patients with covid-19. | IRCT20210205050247N1 |
| Adjunctive vitamin A and vitamin D3 (Cholecalciferol) for enhancing efficacy of allergen-specific immunotherapy in allergic rhinitis, A randomized, double-blind, placebo-controlled trial | Adjunctive vitamin A and vitamin D3 (Cholecalciferol) for enhancing efficacy of allergen-specific immunotherapy in allergic rhinitis, A randomized, double-blind, placebo-controlled trial | TCTR20210129003 |
| Study of the effect of vitamin A supplement in the treatment of acute Gastroenteritis in children 1-5 year | Study of the effect of vitamin A supplement in the treatment of acute Gastroenteritis in children 1-5 year | IRCT20130812014333N140 |
| Effect of vitamin A in patients with COVID19 | evaluation the effect of vitamin A on respiratory signs and hospitalization in patients with COVID-19 | IRCT20170117032004N3 |
| Vitamin A and Zinc Supplements in the Treatment of Visceral Leishmaniasis | Effects of Supplementation with Vitamin A and Zinc in the Treatment of Visceral Leishmaniasis | RBR-5x762v |
| High Dose Vitamin a in Preventing Gastrointestinal GVHD in Participants Undergoing Donor Stem Cell Transplant | Single, High Dose Vitamin a Replacement in Patients Undergoing Allogeneic Hematopoietic Stem Cell Transplantation | NCT03719092 |
| Comparing the effect of vitamin A ointment and Liposic gel for prevention of corneal abrasion | Comparing the effect of vitamin A ointment and Liposic gel for prevention of corneal abrasion during general anesthesia in nonocular surgeries | IRCT20180107038251N4 |
| vitamin A effect on post bronchiolitis wheezing | Determining the effect of vitamin A on persistent wheezing of infants with bronchiolitis admitted to Ali ibn Abi Talib hospital of Zahedan | IRCT20180425039418N5 |
| The Effect and Mechanism of Retinol and Vitamin A Supplementation in Patients with diabetes and pulmonary tuberculosis | The Effect and Mechanism of Retinol and Vitamin A Supplementation in Patients with diabetes and pulmonary tuberculosis | ChiCTR-TRC-12002546 |
| Investigating the Potential Role of Aerosolized Retinoic Acid, a Potent Vitamin A Metabolite for Treating COVID-19 Anosmia and Retinoic Acid Insufficiency .A Novel Approach for Regaining Sense of Smell. | Investigating the Potential Role of Aerosolized Retinoic Acid, a Potent Vitamin A Metabolite for Treating COVID-19 Anosmia and Retinoic Acid Insufficiency .A Novel Approach for Regaining Sense of Smell. | NCT05002530 |
| Efficacy of vitamin A supplementation for prevention and severity reduction of hand-foot-mouth disease in young children | Efficacy of vitamin A supplementation for prevention and severity reduction of hand-foot-mouth disease in young children | TCTR20191002003 |
| Evaluation and comparison of the effectiveness of standard treatment with stand treatment plus Vitamin A in treatment in covid19 patients | Comparison of the effectiveness of standard treatment with stand treatment plus Vitamin A in treatment in covid19 patients | IRCT20180520039738N2 |
| A double-blind, randomised, placebo-controlled study to evaluate the effectiveness of an orally dosed supplement, Skin Accumax, containing vitamin A, vitamin E, vitamin C, phosphatidylcholine (lecithin) and diindolylmethane, on treating acne in men and women aged between 16 and 35. | A double-blind, randomised, placebo-controlled study to evaluate the effectiveness of an orally dosed supplement, Skin Accumax, containing vitamin A, vitamin E, vitamin C, phosphatidylcholine (lecithin) and diindolylmethane, on treating acne in men and women aged between 16 and 35. | ACTRN12614000008628 |
| Vitamin A for BPD Prevention | Vitamin A Oral Supplementation as a Preventive Treatment for Chronic Lung Disease Among Infants Born Before 29 Weeks of Gestation. | NCT04563429 |
| Effect of vitamin A injection on healing of anastomosis | Effect of vitamin A injection on healing of anastomosis in patients with gastrointestinal cancer | IRCT20191127045520N1 |
| Effects of Vitamin A Supplementation to Lactating Mothers on Infants’ Antibody Response to Hepatitis B Vaccine in China | Effects of Vitamin A Supplementation during Lactation on Infants’ Antibody Response to Hepatitis B Vaccine in China | ChiCTR-TRC-12001914 |
| treatment of COVID-19 whit vitamin A | Assessment of vitamin A effectiveness on COVID-19 patients and treatment outcomes referred to health centers of Qom province | IRCT20200314046774N1 |
| Investigating the effect of vitamin A ophthalmic ointment on reducing pain after refractive keratectomy surgery | Investigating the effect of vitamin A ophthalmic ointment on reducing pain and accelerating the recovery of corneal abrasions after photorefractive keratectomy | IRCT20240213060989N1 |
| Using Stable Isotopes to Assess the Effectiveness of Vitamin A Supplementation in Cameroon | Using Stable Isotope Techniques to Monitor and Assess the Vitamin A Status of Children Susceptible to Infection | NCT03383744 |
| RAF 6047 | Use of stable isotope techniques to monitor and assess the vitamin A status of children susceptible to infection | PACTR201803002999356 |
| Effect of Small Daily Doses of B-carotene on Breast Milk Retinol | Effect of Small Daily Doses of B-carotene or Vitamin A on Breast Milk Retinol Concentration in Lactating Filipino Women. | NCT01803659 |
| A Population-based Study of the Determinants of Serum Vitamin A and Vitamin D Concentration and health database in China | A Population-based Study of the Determinants of Serum Vitamin A and Vitamin D Concentration and health database in China | ChiCTR-TRC-14004584 |
| The effect of Friso Premature on growth, sleep characteristics, Nutritional status parameters and inflammatory markers. | The effect of Friso Premature on growth, sleep characteristics, Nutritional status parameters (DHA, Iron, vitamin D, vitamin A and folic acid), inflammatory markers, and F2-isoprostanes in urine. | NL-OMON25053 |
| Evaluating the effect of Vitamin E and Vitamin A on Chemotherapy-Induced Oral Mucositis | Evaluating the effect of Vitamin E and Vitamin A on Chemotherapy-Induced Oral Mucositis | IRCT20210916052498N1 |
| Efficacy and Safety of Vitamin A Treatment for Children With Sepsis | Efficacy and Safety of Vitamin A Treatment for Children With Sepsis: a Randomized Placebo-controlled Clinical Trial | NCT04127968 |
| The Effects of Vitamin A and Heat Exposure on Metabolic Health: A Single-Center, Randomized Controlled Trial | The Effects of Vitamin A and Heat Exposure on Metabolic Health: A Single-Center, Randomized Controlled Trial | ChiCTR2500096475 |
| Effect of vitamin A on pyelonephritis | Effects of oral vitamin A supplementation in girls with acute pyelonephritis | IRCT20130726014170N3 |
| The effect of vitamin A in children with attention deficit hyperactivity disorder (ADHD) | The effect of vitamin A supplementation on severity of disease symptoms and anthropometric indices in children with attention deficit hyperactivity disorder (ADHD) | IRCT20090901002394N51 |
| This study is to find out the beneficial action of vitamin A gel application over a wound caused by laser removal of white type of cancer patches in mouth. | A comparative study to evaluate the efficacy of vitamin A topical application in wound healing of laser ablation treatment in oral leukoplakia : A randomized control trial - NIL | CTRI/2024/11/076989 |
| Evaluation of the effect of Vitamin A supplementation in severity of acute ulcerativecolitis | :Evaluation of the effect of Vitamin A supplementation in severity of acute ulcerativecolitis | IRCT20180520039738N1 |
| Bio-efficacy of Pro-Vitamin A-rich banana to improve vitamin A status among children in Uganda living in an area with a high burden of inflammation. | Bio-efficacy of provitamin A-rich banana to improve vitamin A status among children in Uganda living in an area with a high burden of inflammation. | PACTR202312570462474 |
| Iron and Vitamin A in School Children | Effects of Intermittent Iron and Vitamin A Supplementation on Nutritional Status and Development of Schoolchildren in Arba Minch Zuria District, Ethiopia. | NCT04137354 |
| The Effect of Adjunct Vitamin a on Community-Acquired Pneumonia in Southern Iranian Children: a Randomized Clinical Trial | The Effect of Adjunct Vitamin a on Community-Acquired Pneumonia in Southern Iranian Children: a Randomized Clinical Trial | NCT06677684 |
| Testing vitamin A to prevent pancreas inflammation in children with leukemia during treatment | The Supplementation of Vitamin A for the Prevention of Asparaginase-Associated Pancreatitis in Children With Acute Lymphoblastic Leukemia: A Prospective Single-arm Clinical Trial | ISRCTN78322055 |
| Vitamin A and D Supplementation in Allogeneic HCT | Randomized Study of Vitamin A and D Prophylaxis Before Allogeneic Related and Unrelated Hematopoietic Stem Cell Transplantation | NCT06508099 |
| Effects of vitamin A supplementation on therapeutic outcomes in obese women undergoing in vitro fertilization | Effects of vitamin A supplementation on therapeutic outcomes in obese women undergoing in vitro fertilization | ChiCTR1900026689 |
| Vitamin A Supplementation in Allogeneic Stem Cell Transplantation. | A Randomized Double Blinded Trial of Vitamin A Supplementation in Allogeneic Stem Cell Transplantation. | NCT06450925 |
| The effect of vitamin A on intestinal mucosal injury in pediatric patients receiving hematopoietic stem cell transplantation and chemotherapy: a randomized controlled clinical trial | The effect of vitamin A on intestinal mucosal injury in pediatric patients receiving hematopoietic stem cell transplantation and chemotherapy: a randomized controlled clinical trial | TCTR20191207002 |
| efficacy and safety of Biretrix Tri-Active Spray with Doxycycline in patients with mild to moderate truncal acne | The study of efficacy and safety of Biretrix Tri-Active Spray with Doxycycline versus Vitamin A acid lotion 0.025% with Doxycycline in patients with mild to moderate truncal acne, a randomized control trial | TCTR20240528001 |
| Evaluation of Vitamin A Absorption From Fortified Bouillon | Evaluation of Vitamin A Absorption From Fortified Bouillon Using Post-prandial Retinyl Ester Response in Comparison With an Oil-based Vitamin A Supplement | NCT06438562 |
| Effect of complex probiotics on gastrointestinal and behavioral problems in children with autism spectrum disorder based on trace elements and vitamin A/D | Effect of complex probiotics on gastrointestinal and behavioral problems in children with autism spectrum disorder based on trace elements and vitamin A/D | ChiCTR2400081914 |
| Clinical trial to estimate role of topical vitamin A on chronic wounds. | Randomized control trial of short-contact topical vitamin A ointment on chronic non-healing wounds compared to standard dressings in a tertiary care center. - nil | CTRI/2024/03/064005 |
| Intervention experiment of vitamin A preparation for normal tension glaucoma | Intervention experiment of vitamin A preparation for normal tension glaucoma | ChiCTR1900028567 |
| Effects of vitamin A supplementation on therapeutic outcomes in obese women undergoing in vitro fertilization | Effects of vitamin A supplementation on therapeutic outcomes in obese women undergoing in vitro fertilization | ITMCTR1900002677 |
