title: Extract versus herb: effect of formulation on the absorption rate of botanical ephedrine from dietary supplements containing Ephedra (ma huang).
authors.forename: B
authors.initials: B
authors.lastname: Gurley
mesh_terms: D000042:Absorption; D002626:Chemistry, Pharmaceutical; D019587:Dietary Supplements; D004365:Drugs, Chinese Herbal / Q000493:pharmacokinetics*; D004809:Ephedrine / Q000493:pharmacokinetics*; D006801:Humans
chemical_list: D004365:Drugs, Chinese Herbal; D004809:Ephedrine