Which phase of clinical trials is done after the drug enters the market?: (A) Phase I, (B) Phase II, (C) Phase III, (D) Phase IV
Answer is D. Ans. (D) Phase IV(Ref: KDT 8th/e 91)Clinical TrialOther NamePhase 0Microdosing studiesPhase IHuman pharmacology and safetyPhase IITherapeutic exploratoryPhase IIITherapeutic confirmatoryPhase IVPost marketing surveillance