What is the primary purpose of Phase 1 clinical testing?

The primary purpose of Phase 1 clinical testing is to assess drug properties and safety in humans. This phase typically involves a small group of healthy volunteers and focuses on determining how the drug is metabolized and excreted, as well as identifying any side effects. The goal is to gather preliminary data on the drug's safety profile, including its pharmacokinetics (how the drug is absorbed, distributed, metabolized, and eliminated in the body) and its pharmacodynamics (the effects of the drug on the body).

Phase 1 studies are crucial for establishing a baseline of safety before proceeding to large-scale efficacy trials. It is during this phase that researchers can identify any adverse reactions and understand how different individuals may respond to the drug, informing decisions about dosage adjustments and further testing in subsequent phases.