Approximate number of patients recruited in phase II clinical trials of a drug are?
Phase Name Conducted on I Human Pharmacology and safety Healthy Volunteers II Therapeutic Exploratory (20-200) patients III Therapeutic Confirmatory Upto 5000 patients from several centres IV Post-Marketing Surveillance Large number of patients 0 (ZERO) Microdosing studies Healthy volunteers (Small numbers)
20-100
100-500
500-1000
1000-5000
CLINICAL TRIALS, DRUG LABEL