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Drug Side Effects

Please note: Many side effects of medications may not be reported. Always consult your doctor or healthcare specialist for medical advice. Side effects can be reported to the FDA online at www.fda.gov/safety or call 1-800-FDA-1088 (1-800-332-1088).

Information about drug side effects

A side effect is usually regarded as an undesirable secondary effect which occurs in addition to the desired therapeutic effect of a drug or medication. Side effects may vary for each individual depending on the person's disease state, age, weight, gender, ethnicity and general health.

Side effects can occur when commencing, decreasing/increasing dosages, or ending a drug or medication regimen. Side effects may also lead to non-compliance with prescribed treatment. When side effects of a drug or medication are severe, the dosage may be adjusted or a second medication may be prescribed. Lifestyle or dietary changes may also help to minimize side effects.

A-Z index of side effects

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