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Clinical context

Side effect

An effect of a medicine or treatment in addition to its intended effect.

Source-checked educational compilation · Not independently clinically reviewed

What this means in a clinic conversation

Side effects can vary in severity and duration. Ask about the effects relevant to the exact procedure or product, including which require a call or a change in follow-up.

A question to bring

Which effects should I expect, how long might they last, and whom should I contact?

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Related and commonly confused terms

Sources and editorial context

This definition was compiled from the sources below and has not received independent clinical review. It supports understanding and consultation preparation.

  1. NCI Dictionary: side effect · National Cancer InstituteReference checked 2026-10-02
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