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An adverse effect is an undesired harmful effect resulting from a medication or other intervention, such as surgery. [1] An adverse effect may be termed a " side effect ", when judged to be secondary to a main or therapeutic effect .
Beneficial side effects are less common; some examples, in many cases of side-effects that ultimately gained regulatory approval as intended effects, are: Bevacizumab ( Avastin ), used to slow the growth of blood vessels, has been used against dry age-related macular degeneration , as well as macular edema from diseases such as diabetic ...
Type A: augmented pharmacological effects, which are dose-dependent and predictable [5]; Type A reactions, which constitute approximately 80% of adverse drug reactions, are usually a consequence of the drug's primary pharmacological effect (e.g., bleeding when using the anticoagulant warfarin) or a low therapeutic index of the drug (e.g., nausea from digoxin), and they are therefore predictable.
The potential side effects and interactions of Cialis are the same whether it’s used for ED or BPH, so it is important to be aware of these effects before using this medication. A Final Word on ...
Side effects can include gastrointestinal, esophageal or neurological issues, liver and kidney damage or allergic reactions of varying severity. Antibiotics can be crucial in treating pets. But ...
Because of the complexity of ecosystems, deliberate changes to an ecosystem or other environmental interventions will often have (usually negative) unintended consequences. Sometimes, these effects cause permanent irreversible changes. Examples include: Chinese poster encouraging children to attack sparrows.
A nocebo effect is said to occur when a patient's expectations for a treatment cause the treatment to have a worse effect than it otherwise would have. [ 1 ] [ 2 ] For example, when a patient anticipates a side effect of a medication, they can experience that effect even if the "medication" is actually an inert substance. [ 1 ]
Unlike direct side effects, an adverse event does not necessarily mean the medication directly caused the problem. These events can include any unfavorable symptoms, signs , or medical conditions that appear during medical treatment, regardless of whether they are definitively linked to the specific medication being studied.