SIDE EFFECT definition: 1. an unpleasant effect of a drug, medical treatment, or vaccine (= a substance put into a person's…. Learn more. 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] Side effects are things that are known to be a possible effect of a treatment. For example, a side effect of taking aspirin is excess bleeding. Often times, a side effect is unwanted, but in some cases a side effect could be considered a good thing. Known side effects are listed in the consent form. A side effect is an undesirable secondary effect that occurs in addition to the intended therapeutic effect of a drug or medication. Side effects may vary between individuals based on factors such as medical condition, age, weight, sex, and overall health. Experience a deadly game of chance with Side Effects, the strategy horror challenge that has players gulping down mysterious pills and praying they picked the right one 💊😱. On PlayMiniGames you can dive into this pulse-pounding ordeal where every decision means life or death. 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. In the simplest terms, a side effect is an unintended response to a medication or medical intervention. It’s a biological reaction that is not the desired therapeutic outcome. Side effect: An unintended but known effect beyond the drug's main purpose; can be mild, neutral, beneficial, or harmful. These are predictable from trials and listed on labels. Side Effects is a strategy and horror game where you must take pills without poisoning yourself and use various items to survive longer than your opponent. You will experience intense moments of tension and thrills due to bizarre and intense situations. Side effects, also known as adverse reactions, are unwanted undesirable effects that are possibly related to a drug. Side effects can vary from minor problems like a runny nose to.