title: Nonprescription sale of inhaled metaproterenol--déjà vu.
mesh_terms: D000336:Aerosols; D004335:Drug and Narcotic Control / Q000331:legislation & jurisprudence*; D006801:Humans; D009921:Metaproterenol / Q000008:administration & dosage / Q000009:adverse effects*; D004366:Nonprescription Drugs / Q000008:administration & dosage / Q000009:adverse effects*; D014481:United States; D014486:United States Food and Drug Administration
chemical_list: D000336:Aerosols; D004366:Nonprescription Drugs; D009921:Metaproterenol