| Double-blind, randomised, multi-centre, placebo-controlled clinical trail to investigate the efficacy and safety of a combination of comfrey root extract plus methyl nicotinate versus a preparation containing methyl nicotinate alone or placebo in patients with conditions of acute upper or low back pain. - COIL2 | Double-blind, randomised, multi-centre, placebo-controlled clinical trail to investigate the efficacy and safety of a combination of comfrey root extract plus methyl nicotinate versus a preparation containing methyl nicotinate alone or placebo in patients with conditions of acute upper or low back pain. - COIL2 | EUCTR2008-008721-29-DE |
