FDA-approved peptides for horses: what is and isn't approved

Which peptide-type drugs are FDA-approved for horses?

The approved ones are reproductive hormone drugs used by vets, not recovery peptides. The example we verified is SucroMate Equine. Its active ingredient, deslorelin acetate, is a lab-made analog of GnRH, a hormone that controls ovulation.

FDA approved SucroMate Equine on 5 Nov 2010 under NADA 141-319. It is approved to bring on ovulation in mares in heat, when a follicle of a set size is present. It is a prescription drug, used by or on the order of a vet. It is a breeding tool and has nothing to do with tendons, joints or wounds.

Is BPC-157 FDA approved for horses?

No. BPC-157, TB-500, GHK-Cu and KPV are not approved for horses or any other animal. None of them is listed in FDA's Green Book. They are also not officially tested in horses. BPC-157 returns no PubMed results at all for horses.

FDA's position is simple. A product sold to treat disease in animals without approval is an unapproved drug. On 12 Nov 2024 FDA warned six sellers of seizure products for animals on those grounds. No peptide was named. We found no FDA action aimed at these peptides for animals, and that silence is not approval.

You may have read 2026 news about BPC-157 and compounding. An FDA advisory committee voted to recommend BPC-157 for a compounding list, and HHS published a draft enforcement policy that covers BPC-157, KPV and TB-500. Both are about compounding for people under prescription. Neither is an approval, and neither mentions animals. Our page on human peptides and horses covers products made for people.

What about competition rules?

Approval and competition rules are separate, and a competition horse should not have any of these peptides. The FEI 2026 list bans "Thymosin (synthetic fragments)", which covers TB-500. BPC-157, GHK-Cu and KPV are not named, but the list also covers any substance with a similar chemical structure or similar biological effect. A test to detect TB-500 in horses was published in 2012.

Not named does not mean allowed. Our guide on whether BPC-157 is banned in competition goes through it, and racing has its own rules.

What does FDA-approved mean, and how do I check?

It means FDA reviewed the drug before sale and found it safe and effective for the species and use on its label. FDA also checks how it is made and labelled. Anything outside approval, conditional approval or indexing is an unapproved animal drug, which FDA says was never reviewed and may not be properly made or labelled. Most peptide vials are labelled "research only", so the label may not match what is inside.

You can check a product at the yard in a few minutes:

• Look for "Approved by FDA under NADA # XXX-XXX" (brand) or "ANADA # XXX-XXX" (generic).
• Search the trade name, ingredient or number in Animal Drugs @ FDA. The Green Book is updated monthly.
• Check that horses are named on the label.
• An NDC number, a "Caution: Federal law restricts this drug" line or "made in an FDA-registered facility" does not prove a drug is legally marketed.

Can a vet use compounded or off-label drugs for my horse?

Yes, within limits. A federal law called AMDUCA lets vets use approved animal or human drugs in ways the label does not list. That needs a real vet-client-patient relationship, and the horse's health must be at risk without treatment. Owners may not do this on their own, and AMDUCA does not allow compounding from raw active ingredients. Extra rules apply to animals that may enter the food chain.

Compounding from bulk ingredients falls under FDA guidance GFI #256. FDA does not normally act against it when no other suitable treatment exists. The bulk-substance list covers office stock only. Compounding for one animal is a separate route with its own conditions. Neither route approves anything, and we found no vet compounding pharmacy offering these peptides.

What vets use instead for common horse problems

For the problems that most often bring owners to peptides, there are approved products your vet can weigh up. These are examples, not a treatment plan, and your vet will also check them against your competition rules.

• Ulcers: see our gastric ulcers page.
• Sore joints: see arthritis. For tendons, see tendon injuries.
• Feet and wounds: start with laminitis or wounds.

When to call your vet

Call your vet before you give your horse anything without an approval number, and before any injection into a joint. Sudden severe lameness, a hot swollen joint, or swelling after any injection needs a vet the same day. If you think a product hurt your horse, tell your vet and report it to FDA.