Clinical Research Phases: Understanding Phase 1, Phase 2, Phase 3, and Phase 4 Trials
Clinical research phases are stages of human drug development that help scientists evaluate investigational treatments for safety, effectiveness, and appropriate use. Phase 1 primarily examines safety and dosage, Phase 2 explores preliminary efficacy, Phase 3 provides larger-scale evidence of benefits and risks, and Phase 4 investigates approved treatments after they reach the market. Each stage […]