Before a new drug reaches consumers, it goes through rigorous clinical testing. These tests are essential to ensure the drug is both safe and effective. The process is divided into several phases, each with a specific focus:
- Phase 1: This phase assesses the safety of a drug. It involves a small group of healthy volunteers. The main goal is to determine the drug's most frequent side effects and how it is metabolized and excreted by the body.
- Phase 2: In this phase, the focus shifts to evaluating the efficacy of the drug. It usually involves a larger group and further investigates its safety.
- Phase 3: This stage aims to confirm the drug's effectiveness, monitor side effects, and compare it with commonly used treatments. This phase includes large groups of participants.
Each phase is crucial and represents a significant financial and time investment from the original manufacturer. This investment helps ensure that only beneficial and safe medications reach the market.