An adverse event in herbal medicine is defined as which?

• A. An expected therapeutic effect
• B. A standard drug interaction
• C. Any unwanted event or reaction after taking an herb
• D. A documented adverse event

Answer: (C)

An adverse event in herbal medicine is defined as any unwanted event or reaction after taking an herb. This broad idea covers a wide range of possibilities, from mild side effects like stomach upset or a skin rash to more serious reactions such as allergic responses or liver toxicity, and it can include herb–drug or herb–other herb interactions or issues from contamination. The emphasis is on unwanted or harmful outcomes, not on the intended therapeutic effect. It’s not confined to what’s officially documented, nor is it limited to a single type of interaction; those are just specific instances that can be adverse events.