Adverse reactions are often more serious than common side effects and may require medical intervention, changes in dosage, or discontinuation of the drug. They can be predictable (dose-related) or unpredictable (such as allergic reactions or unique patient susceptibilities). Learning about Side Effects -- From Minor to Life Threatening -- Unwanted or Unexpected Drug Reactions SIDE EFFECT definition: 1. an unpleasant effect of a drug, medical treatment, or vaccine (= a substance put into a person's…. Learn more. Side effect In medicine, a side effect is an unintended effect caused by a medicinal drug or other treatment's capacities or properties, and these effects are often adverse but sometimes beneficial. [1] Herbal and traditional medicines also have side effects. Find side effects information for thousands of prescription and over-the-counter medications, from common to rare, mild to severe. Side effects are ubiquitous in medicine and they often play a role in treatment decisions for patients and clinicians alike. Philosophers and health researchers often use side effects to illustrate issues with contemporary medical research and. The meaning of SIDE EFFECT is a secondary and usually adverse effect (as of a drug) —called also side reaction. How to use side effect in a sentence. WebMD explains the different types of side effects of prescription and over-the-counter medications, and the role of the FDA in approving and regulating them. Many treatments and medical procedures can cause side effects. Learn more about the types of effect that people may experience. Sometimes side effects are transient — they appear as the body adjusts to a new medication and fade over time. Others may require long-term strategies. For example, medications that cause nausea might be taken with food, or a drug that causes drowsiness might be scheduled for nighttime use. Healthcare providers also weigh the risk-benefit ratio.