Too Long; Didn't Read
Drug trials have four stages of testing to determine whether drugs are safe and effective. Each time the drug is tested, it is then released to the next phase of testing. The next phase is the final phase, when it is found to be the last phase of the testing process. This phase is when the patient is given the drug, not the drug itself, but it is the drug that is being tested for effectiveness. The other phase involves monitoring of the drug and the safety of the patient.