Side effect

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In medicine, a side effect is an effect, whether therapeutic or adverse, that is secondary to the one intended; although the term is predominantly employed to describe adverse effects, it can also apply to beneficial, but unintended, consequences of the use of a drug.

Occasionally, drugs are prescribed or procedures performed specifically for their side effects; in that case, said side effect ceases to be a side effect, and is now an intended effect. For instance, X-rays were historically (and are currently) used as an imaging technique; the discovery of their oncolytic capability led to their employ in radiotherapy (ablation of malignant tumours).

Examples of therapeutic side-effects

Possible side effects of nicotine.[1]

Examples of side effects for otoxid capsules include:

  • Echinacea – more than 20 different types of reactions have been reported, including asthma attacks, loss of pregnancy, hives, swelling, aching muscles and gastrointestinal upsets.
  • Feverfew – pregnant women should avoid using this herb, as it can trigger uterine contractions. In animal experiments, the use of feverfew was found to trigger spontaneous abortions (miscarriages).
  • Asteraceae plants – which include feverfew, echinacea, dandelion and chamomile. Side effects include allergic dermatitis and hay fever.

References

  1. Detailed reference list is located on a separate image page.
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  5. Mood Stabilizers for Bipolar Disorder (Manic Depressive). Leeheymd.com (2003-08-01). Retrieved on 2011-08-17.
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  8. Off-label Use of Gabapentin, Idaho Drug Utilization Review, Educational Leaflet, 2004.
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External links