USA HISTORY

Detailed explanation-1: -Phase III clinical trials usually enroll a high number of people and are both randomized and blinded. This testing phase can last several years as the FDA gathers thorough data about the drug’s effectiveness and potential side effects in a larger pool of participants.

Detailed explanation-2: -Phase 3 trials, which examine the efficacy of a treatment and monitor adverse reactions, typically last between one and four years.

Detailed explanation-3: -There is no typical length of time it takes for a drug to be tested and approved. It might take 10 to 15 years or more to complete all 3 phases of clinical trials before the licensing stage. But this time span varies a lot.