Clinical trials begin at phase I and progress through phases II, III, and IV. What would cause a drug to be removed from a clinical trial?
A) The drug is unsafe.
B) The drug is too similar to other marketed drugs.
C) The drug is found to have side-effects.
D) Bioavailability is poor.

Question

Quizplus · Accepted Answer

A drug would be removed from a clinical trial if it is found to be unsafe, as patient safety is the primary concern in clinical trials.

Clinical Trials Begin at Phase I and Progress Through Phases