side effect
noun
: 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.
Recent Examples on the Web
Both drugs have similar side effects, including dizziness and tiredness.
—
Karen Berger, Pharmd, Verywell Health, 13 Mar. 2025
Conventional treatments primarily rely on immunosuppressive drugs, which can have significant side effects.
—Jesse Pines, Forbes, 12 Mar. 2025
While losing their menstrual period permanently may be a good thing, the side effects that come with it can be daunting.
—Faisal Kutty, Newsweek, 12 Mar. 2025
More serious side effects from vaccination are extremely rare, according to the CDC.
—Neha Mukherjee, CNN, 12 Mar. 2025
See All Example Sentences for side effect
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Karen Berger, Pharmd, Verywell Health, 13 Mar. 2025
Conventional treatments primarily rely on immunosuppressive drugs, which can have significant side effects.
—Jesse Pines, Forbes, 12 Mar. 2025
While losing their menstrual period permanently may be a good thing, the side effects that come with it can be daunting.
—Faisal Kutty, Newsweek, 12 Mar. 2025
More serious side effects from vaccination are extremely rare, according to the CDC.
—Neha Mukherjee, CNN, 12 Mar. 2025
See All Example Sentences for side effect
Cite this Entry
“Side effect.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/side%20effect. Accessed 18 Mar. 2025.
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