Peptides for dogs, cats & horses
The same research peptides people use for recovery and healthy aging are increasingly given to pets — for torn ligaments, hip dysplasia, gut problems, wounds, and senior decline. Here's which compound is used in which animal, what the vet literature reports, how it's dosed by weight, and where to buy it from labs that publish their testing.
By animal
Where the veterinary use is strongest, and what it's used for.
The peptides
Every one is in our price comparison, sold by the same COA-tested labs. Tap through to see price-per-mg across vendors.
BPC-157
Body Protection Compound
The most-used peptide in pets. Soft-tissue and ligament recovery (CCL/ACL), hip dysplasia, and gut problems like IBD.
How it's given: Subcutaneous (scruff, 31G insulin syringe) or oral capsule.
TB-500
Thymosin Beta-4 fragment
Soft-tissue, tendon, and broader recovery. The most established equine peptide, with 20+ years of use in horses for tendon repair.
How it's given: Subcutaneous in dogs/cats; intramuscular in horses.
GHK-Cu
Copper Peptide
Chronic wounds, post-surgical healing, skin and coat quality. Frequently used topically as well as by injection.
How it's given: Topical on wounds/skin, or subcutaneous.
KPV
Lys-Pro-Val
Gut-barrier and inflammation support, especially IBD and allergic/inflammatory skin conditions.
How it's given: Oral capsule or subcutaneous.
NAD+
Nicotinamide adenine dinucleotide
Cellular energy and healthy-aging support in senior pets — part of the longevity tier, not a recovery compound.
How it's given: Subcutaneous; dosing highly individualized.
MOTS-c
A mitochondrial-derived peptide explored for metabolic resilience in aging animals.
How it's given: Subcutaneous; experimental.
Epithalon
Epitalon
Telomere/longevity research compound explored for healthy-aging in senior pets.
How it's given: Subcutaneous, typically in short cycles; experimental.
Work out the exact dose by weight
Enter your dog, cat, or horse's weight and get the precise U-100 syringe units to draw — with a built-in safety check for the tiny volumes cats and small pets need.
Safety & the honest caveats
- No controlled trials exist in pets. Everything reported is observational vet use and case series — useful real-world signal, but not proof.
- Cancer is a contraindication. Tissue-repair peptides promote new blood-vessel growth, so they're avoided in animals with active or high-risk cancer.
- Cats are dosed lower than dogs and their tiny volumes are hard to measure — dilute more if the draw is under ~2 units, and never eyeball it.
- Handle it right: refrigerate reconstituted vials, protect from light, use a 31G insulin syringe and clean technique.
- Involve your vet. They can prescribe compounded versions legally and monitor your animal — this page is a starting point for that conversation, not a substitute for it.
Frequently asked questions
What peptides are used in pets?
The most-used are BPC-157 and TB-500 for soft-tissue, tendon, and gut recovery, GHK-Cu for wounds and skin, and KPV for inflammation and gut-barrier support. A longevity tier (NAD+, MOTS-c, Epithalon) is used experimentally in senior pets. These are the same research peptides sold to humans; pet owners dose them by the animal's body weight.
Is it legal to give peptides to my pet?
Peptides like BPC-157 are not FDA-approved for any veterinary use, but veterinarians have legal authority to use compounded medications off-label when they judge it in the patient's best interest. Products sold online as research chemicals are not approved for animal use. Work with a licensed vet.
How do I dose peptides for a dog or cat?
Dosing is based on body weight (mcg per kg). Reported ranges for BPC-157 are about 5-10 mcg/kg/day in dogs and lower in cats; TB-500 is roughly 0.1-0.25 mg/kg per week in dogs. Our pet calculator turns a weight and dose level into exact syringe units, but the right dose for your animal is a conversation for your veterinarian.
Are peptides safe for pets?
There are no randomized controlled trials in any pet species — use is observational and off-label. The main hard contraindication is active or high-risk cancer, because tissue-repair peptides promote blood-vessel growth. Refrigerate reconstituted vials, use sterile technique, and involve your vet.
Read next
Species-by-species guides on what's used, dosing, and safety.
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