The international body that sets anti-doping rules in competitive sport — their Prohibited List determines which substances athletes cannot use.WADA publishes the Prohibited List annually. The S2 category (Peptide Hormones, Growth Factors, and Related Substances) covers most research peptides including GH secretagogues, IGF-1 analogs, and performance compounds. WADA prohibition means athletes subject to anti-doping testing rules cannot use the compound in or out of competition (depending on category). It does not make possession or personal use illegal in most jurisdictions — the prohibition applies to sport participation, not criminal law. WADA status is documented for every compound on this site.