Pet peptide dosing calculator
Pick your animal and peptide, enter its weight, vial size, and how much bacteriostatic water you added, and get the exact U-100 syringe reading to draw. Dose levels are starting points reported in veterinary use — a conversation to have with your vet, not a prescription from us.
Animal
Peptide
Dose level (mcg/kg, daily)
The number on the vial label — the powder, before any water.
How much BAC water you mix into the vial. More water = an easier, larger draw.
Fill in the animal's weight, dose, vial size, and water, and the syringe reading appears here.
Dose
—
mcg
Concentration
—
mg/mL
Per unit
—
mcg/unit
This calculator performs arithmetic on the numbers you enter. It does not recommend doses, protocols, or products, and nothing here is veterinary or medical advice. Peptides are not FDA-approved for the uses discussed and there are no controlled trials in pets. See our methodology.
Frequently asked questions
How is peptide dosing for pets calculated?
Pet peptide dosing is based on body weight. A per-kilogram amount (mcg/kg) reported in veterinary use is multiplied by the animal's weight to get a total dose in micrograms, then converted to units on a U-100 insulin syringe using the vial's concentration. This calculator does that arithmetic on the numbers you enter; it does not prescribe a dose.
Are cat doses different from dog doses?
Yes. Cats are generally dosed lower than dogs by body weight, and because they are small the resulting volume can be tiny and hard to measure accurately. If your result is under about 2 units on a U-100 syringe, ask your vet about diluting the vial further so the same dose becomes a larger, readable draw. Never eyeball micro-volumes.
Is it safe to give my pet peptides?
There are no randomized controlled trials of these peptides in any pet species; use is observational and off-label. Active or high-risk cancer is a contraindication for tissue-repair peptides because of angiogenesis concerns. Always work with a licensed veterinarian before giving any peptide to an animal. This tool is educational and is not veterinary advice.
Which peptides does the calculator cover?
It includes BPC-157, TB-500, GHK-Cu, and KPV, plus a Custom option for any compound. BPC-157 and TB-500 come with weight-based dose presets because they have the most reported veterinary use; for GHK-Cu, KPV, and custom compounds the calculator asks you to enter the mcg/kg figure your veterinarian provides, rather than showing an invented preset.
Where to buy — and what to check first
Pet owners buy the same research vials we already compare. See price-per-mg across trusted, COA-tested labs.
THE BOOK BEHIND THIS CALCULATOR
The Pet Peptide Playbook: dosing for dogs, cats, and horses, done properly.
This calculator gives you one number. The Playbook gives you the whole picture: weight-based dose tables for every compound by species, the honest evidence behind each one, the never-do rules, and how to keep your vet in the loop. Written by the platform that tests peptide vendors for a living.