side effect
nounDefinition of side effect
: a secondary and usually adverse effect (as of a drug)
toxic side effects
— called also side reaction
Examples of side effect in a Sentence
Nausea and diarrhea are the side effects of the drug.
the harmful side effects of using chemicals to kill insects
The merger created positive side effects for both companies.
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Recent Examples on the Web
Common side effects of benzoyl peroxide include flakiness, irritation, and, apparently... eyebrow bleaching? — Nicola Dall'asen, Allure, "A Redditor Says Benzoyl Peroxide Cream Turned Her Brown Eyebrows Blonde," 23 Aug. 2019 Common side effects include dizziness, blurred vision, sleepiness and difficulty concentrating. — CBS News, "FDA approves first generic copies of nerve pain drug Lyrica," 22 July 2019 The most common side effects of ORILISSA include: hot flashes or night sweats, headache, nausea, difficulty sleeping, absence of periods, anxiety, joint pain, depression, and mood changes. — Vogue, "Rosalía Just Kickstarted Festival Season’s Unlikeliest Trend," 8 July 2019 The most common side effects of Vyleesi are nausea, headache and flushing. — Michael Nedelman, CNN, "FDA approves new drug for women with low sexual desire disorder," 21 June 2019 The most common side effect in company studies was nausea. — Washington Post, "New drug to boost women’s sex drive approved in US," 21 June 2019 The most common side effect in company studies was nausea. — Matthew Perrone, BostonGlobe.com, "Waltham-based Amag’s sex-drive drug for women gets FDA approval," 21 June 2019 The most common side effects of ORILISSA include: hot flashes or night sweats, headache, nausea, difficulty sleeping, absence of periods, anxiety, joint pain, depression, and mood changes. — Glamour, "The Biggest Swimwear Color Trends for Summer 2019," 25 May 2019 The most common side effects of ulipristal acetate are generally the same as levonorgestrel, including headache, stomach pain, wonky bleeding, and nausea. — Natasha Lavender, SELF, "Here's How Emergency Contraception Actually Works," 1 Apr. 2019These example sentences are selected automatically from various online news sources to reflect current usage of the word 'side effect.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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