Is Ac-SDKP legal in the United States?

Ac-SDKP is the first four building blocks of thymosin beta-4. It is a natural peptide that fights scarring inside organs. The enzyme ACE breaks it down, which is why ACE-inhibitor blood pressure pills raise it. There are animal data and human measurements. It is sold as capsules that probably do not survive digestion.

Ac-SDKP is made in your body and limits scarring in heart, kidney and lung models. People taking ACE-inhibitor blood pressure pills have more of it in their blood, which is well documented.

How it works: It slows the cells that lay down scar tissue and cuts collagen build-up. The blood pressure enzyme ACE breaks it down.

Approval history: Not approved

Approves prescription drugs, each for a named use. It also acts against unapproved products, including peptides sold online. Compounding pharmacies, which mix drugs to order, may make some compounds with a prescription. That only applies when the FDA puts the compound in a category of bulk ingredients it allows.

The legal category above is how The Longevity Archive reads U.S. Food and Drug Administration listings for Ac-SDKP on the reviewed date. It is not a legal opinion. Rules change. Bringing a compound into the country, prescribing it and owning it can each be treated differently. Check with the agency before you act on anything here.

Check FDA directly

Whether Ac-SDKP is banned in sport is set by the World Anti-Doping Code and by military rules, not by its legal status in the United States. Before you compete or get tested, look up Ac-SDKP by name on the Prohibited List, or look up a named product in Global DRO. Under the World Anti-Doping Code, category S0 bans, at all times, any drug-like substance that meets two tests. No other section of the List covers it. And no government health regulator anywhere has a current approval for it as a treatment in people. Many substances that are approved somewhere are banned by name in another section. So approval does not mean a substance is allowed in sport.

• WADA Prohibited List
• Global DRO (check a named product)
• USADA (US athletes)
• Operation Supplement Safety (US service members)

The rules you compete or serve under decide this, not this page.