Definition
Any unintended consequence of a medication beyond its primary therapeutic purpose—ranging from mild annoyances to reasons you're calling your lawyer. The fine print that pharmaceutical commercials race through while showing people hiking.
Example Usage
The side effects include nausea, headache, and potentially fatal liver failure—but hey, your cholesterol will be great.
Origin
Pharmaceutical terminology from early 20th century
Fun Fact
Some side effects become new uses—Viagra was originally developed for heart disease, but its side effect turned out to be far more profitable.
Source: Pharmacology terminology
Related Terms
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See “side effect” in Corporate Speak, Gen-Z Slang, Pirate Speak, and more.
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