What does half-life mean?

Half-life is the time it takes for the amount of a compound in the body to fall by half. After about four to five half-lives, most of it has cleared. Our half-life reference places every compound on a single scale so you can compare how long each stays active.

Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use.

Part of the basics. What peptides are, and how to read this database.