title: Safety concerns prompt US ban on dietary supplement.
authors.forename: Jonathan
authors.initials: J
authors.lastname: Knight
mesh_terms: D029789:Ephedra / Q000009:adverse effects* / Q000506:poisoning; D006801:Humans; D008297:Male; D014481:United States; D014486:United States Food and Drug Administration / Q000331:legislation & jurisprudence*