Large-scale trials of vitamin C in the prevention and treatment of "colds".
D001205:Ascorbic Acid / Q000008:administration & dosage / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D003139:Common Cold / Q000188:drug therapy* / Q000517:prevention & control; D004341:Drug Evaluation; D006801:Humans; D010919:Placebos
D010919:Placebos; D001205:Ascorbic Acid