title: Invited commentary: The safety of dietary supplements. Comment on "Effect of Enzyte on QT and Qtc intervals".
authors.forename: Paul
authors.initials: P
authors.lastname: Shekelle
mesh_terms: D000367:Age Factors; D015986:Confounding Factors, Epidemiologic; D019587:Dietary Supplements / Q000009:adverse effects*; D004562:Electrocardiography; D007172:Erectile Dysfunction / Q000188:drug therapy / Q000517:prevention & control; D006329:Heart Conduction System / Q000187:drug effects*; D006801:Humans; D008297:Male; D016171:Torsades de Pointes / Q000139:chemically induced; D014481:United States; D014486:United States Food and Drug Administration