Which of the following terms is defined as "an effect that is noxious and unintended, and that occurs at doses used in man for prophylaxis, diagnosis, or therapy"?

Question

a. toxic reaction
b. adverse drug reaction
c. adverse drug event
d. idiosyncratic reaction

Answer 1

b. This definition of an adverse drug reaction (ADR) has been created by the World Health Organization (WHO). This term is restrictive because it only considers incidents where use of the drug is appropriate, excluding many adverse events caused by medication errors. Adverse drug reactions are unpredictable and unintentional because it is not known that a reaction will occur.