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  1. Adverse drug reactions (adverse effects) are any unwanted effects of drugs (including medications). There are several different types: Dose-related. Allergic . Idiosyncratic . Dose-related adverse drug reactions represent an exaggeration of the drug's therapeutic effects. For example, a person taking a medication to reduce high blood pressure may feel dizzy or light-headed if the medication ...

  2. Rare instances of adverse events following COVID-19 vaccinations have been reported to the Vaccine Adverse Event Reporting System. ... Anaphylaxis, a severe type of allergic reaction, can occur after any kind of vaccination. If it happens, healthcare providers can effectively and immediately treat the reaction.

  3. Adverse drug reaction (ADR, or adverse drug effect) is a broad term referring to unwanted, uncomfortable, or dangerous effects that drugs (including medications ) may have. Adverse drug reactions can be considered a form of toxicity; however, toxicity is most commonly applied to effects of overingestion (accidental or intentional) or to ...

  4. 7 de oct. de 2000 · We define an adverse drug reaction as “an appreciably harmful or unpleasant reaction, resulting from an intervention related to the use of a medicinal product, which predicts hazard from future administration and warrants prevention or specific treatment, or alteration of the dosage regimen, or withdrawal of the product.” Such reactions are currently reported by use of WHO's Adverse ...

  5. 16 de mar. de 2023 · Side effects are unwanted, usually unpleasant, effects caused by medicines. Most are mild, such as a stomachache, dry mouth, or drowsiness, and go away after you stop taking the medicine. Others can be more serious. Sometimes a drug can interact with a disease that you have and cause a side effect. For example, if you have a heart condition ...

  6. Common adverse drug reactions. Digestive disturbances—loss of appetite, nausea, a bloating sensation, constipation, and diarrhea—are particularly common adverse drug reactions, because most drugs and medications are taken by mouth and pass through the digestive tract. However, almost any organ system can be affected.

  7. Adverse drug reactions: Summary. An adverse drug reaction (ADR) is a response to a medicinal product which is noxious and unintended, where a causal relationship between the medicinal product and adverse event is either known or strongly suspected. Adverse reactions may arise following the use of a medicinal product within or outside the terms ...