: a drug usually newly discovered that elicits a dramatic response in a patient's condition : miracle drug
- So far, Prozac is acting as something of a wonder drug; it is highly effective, causes few dangerous side effects, and is already the most widely prescribed antidepressant after just 4 years on the market.
- —Ruth Levy Guyer and Daniel E. Koshland Jr.
- Stodgy old aspirin suddenly appears to be a wonder drug. But as often happens in medicine, the news hype may have overreached in search of hope.
- —Steven Findlay