# PeptideBasics101 > Plain-English and scientific reference pages on peptides and related substances: doses used in trials, results so far, FDA approval and compounding status, storage, side effects, patents and primary sources. Informational only: not for human or veterinary use, not medical advice. Every page cites its sources. ## Substances - [Semaglutide](https://peptidebasics101.com/substances/semaglutide/): A GLP-1 receptor agonist (weekly injection or daily tablet), approved for type 2 diabetes, chronic weight management, cardiovascular risk reduction and MASH. FDA approval: approved; 503A compounding: restricted; trials catalogued: 6. ## Other pages - [Sergeant Pep](https://peptidebasics101.com/sgt-pep/): the site assistant and its limits. - [Terms, sourcing and privacy](https://peptidebasics101.com/terms/)