Vitamin C--were the trials well controlled and are large doses safe?
D000818:Animals; D001205:Ascorbic Acid / Q000008:administration & dosage* / Q000009:adverse effects; D002986:Clinical Trials as Topic; D003139:Common Cold / Q000188:drug therapy; D003967:Diarrhea / Q000139:chemically induced; D005069:Evaluation Studies as Topic; D010919:Placebos
D010919:Placebos; D001205:Ascorbic Acid