Clinical Trials Design
Clinical trial s are the way that every drug, treatment, vaccination, and medical device has to pass through it because without the trials, not no medical drug or treatment allows implementation on people. Each and every clinical trial has four phases and each phase and every phase is all about checking the efficacy and safety of the drug. In phase I the drug is the first time experiment on humans. The people participating in clinical trial 1 are the small group of people usually from 15 to 40. The safety of the drug is highly observed in phase I. Phase II trial is the second step that if the drug is passed then it moved to the next step. In this step, the number of participants increases at this stage the efficacy most possible benefits also observed with the safety of drugs. In phase III that if it is approved then the drug or treatment or any experiment of the trial will be allowed to market. In clinical trial phase III the drug, treatment, vaccination, and medical device ar