| The beneficial effect on gastrointestinal discomfort of a food supplement based on a mixture of tannins from Castanea sativa bark and Schinopsis quebracho-colorado wood | Efficacy study of a food supplement based on a mixture of tannins from Castanea sativa Mill. Bark and Schinopsis quebracho-colorado (Schltdl.) F.A. Barkley & T. Mey wood for the management of gastrointestinal discomfort in subjects with irritable bowel syndrome (IBS): single-center, placebo-controlled, randomized clinical study, parallel arms, double-blind | ISRCTN11681307 |
