不良反应 (医学)

不良反应（英文：adverse effect），在医学领域，又称为不良作用、不良影响、不良后果，是指一种有害的，人们所不希望出现的，由于某种药物或其他诸如化疗或手术之类的医療所造成的反应、效应、作用、效果、结果或影响。

参见 
副作用
病人安全
药物不良反应

外部連結
 Patient Safety Network  - includes a glossary and articles on adverse effects, drug reactions, medical error, iatrogenesis, among others.
 Australian Adverse Drug Reactions Bulletin - published bimonthly
 MedEffect Canada (Health Canada)
 Side Effects of Prescription Drugs
 Medication Errors—from the .
 Medical Product Safety Information  - MedWatch lists safety alerts for drugs, biologics, devices and dietary supplements, recalls, market withdrawals, public health advisories and links
 Medical Devices Safety  National Library of Medicine (Medline Plus, useful lists of conventional drug and medical device articles and websites)
 When Medicine Hurts Instead of Helps - June 1998 report by the .
 Search AERS Data and Report Drug Side Effects at RxISK.org 

醫學術語
药理学