What does the acronym ADR stand for in medical terminology?

The correct interpretation of the acronym ADR in medical terminology is "adverse drug reaction." This term is commonly used in healthcare to describe any harmful or undesirable effect resulting from the administration of a medication. Adverse drug reactions can vary in severity and might manifest as mild side effects or severe allergic reactions. Recognizing and documenting ADRs is crucial in clinical practice, as it helps ensure patient safety, informs treatment decisions, and guides future medication prescribing.

Understanding definitions related to drug reactions is vital for healthcare providers, as it enhances their ability to monitor and manage patient responses to medications. The other options relate to drug effects but do not accurately reflect the standard terminology used in medical discussions surrounding safety and efficacy related to medications.