Phase I-III clinical trials

Clinical trials are organized steps that test new medical treatments to ensure they are safe and effective. Phase I involves a small group to assess safety and dosage. Phase II expands to more people to evaluate effectiveness and side effects. Phase III involves large-scale testing to compare the new treatment against current options, confirming benefits and monitoring adverse reactions. If successful, the treatment can move to regulatory approval. These phases systematically ensure that new therapies are both safe for patients and beneficial before they become widely available.