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Medical Dictionary

adverse effect

Pronunciation (ad′vers e-fekt′)
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  1. a result of drug or other therapy in addition to or in extension of the desired therapeutic effect; usually but not necessarily, connoting an undesirable effect. Although technically the therapeutic effect carried beyond the desired limit (e.g., a hemorrhage from an anticoagulant) is a side effect, the term more often refers to pharmacologic results of therapy unrelated to the usual objective (e.g., a development of signs of Cushing syndrome with steroid therapy).

Syn: side effect

WebMD Medical Reference from "Stedman's Medical Dictionary"

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