Herbal medicines: Newer rules, familiar problems. Proposed regulations may improve quality but still won't require proof of safety and effectiveness.
D004335:Drug and Narcotic Control; D008517:Phytotherapy / Q000009:adverse effects*; D028321:Plant Preparations / Q000009:adverse effects* / Q000627:therapeutic use; D014481:United States; D014486:United States Food and Drug Administration
D028321:Plant Preparations