Adverse drug events (ADEs) are defined as any injuries resulting from medication use, including physical harm, mental harm, or loss of function [7]. ADEs, compared with medication errors, are a more direct measure of patient harm.

What are considered examples of adverse drug events and reactions?

Examples of such adverse drug reactions include rashes, jaundice, anemia, a decrease in the white blood cell count, kidney damage, and nerve injury that may impair vision or hearing. These reactions tend to be more serious but typically occur in a very small number of people.

When does adverse drug reaction occur?

An adverse drug reaction is a harmful reaction to a medicine given at the correct dose. The reaction can start soon after you take the medicine, or up to 2 weeks after you stop. An adverse drug reaction can cause serious conditions such toxic epidermal necrolysis (TEN) and anaphylaxis.

What's the difference between allergic reaction and adverse reaction?

3. How does an ADR differ from a side effect or allergy? An allergy is an adverse drug reaction mediated by an immune response (e.g., rash, hives). A side effect is an expected and known effect of a drug that is not the intended therapeutic outcome.

What are the different types of adverse drug reaction?

Adverse drug reactions are classified into six types (with mnemonics): dose-related (Augmented), non-dose-related (Bizarre), dose-related and time-related (Chronic), time-related (Delayed), withdrawal (End of use), and failure of therapy (Failure).

What is adverse drug reaction in pharmacology?

An adverse drug reaction (ADR) is an unwanted or harmful reaction experienced following the administration of a drug or combination of drugs under normal conditions of use and is suspected to be related to the drug.

What is adverse reaction?

Adverse reaction: In pharmacology, any unexpected or dangerous reaction to a drug. An unwanted effect caused by the administration of a drug. The onset of the adverse reaction may be sudden or develop over time. Also called an adverse drug event (ADE), adverse drug reaction (ADR), adverse effect or adverse event.