How the BPC-157 calculator works
Lyophilized (freeze-dried) powder in a sealed vial, labelled in milligrams. The quick-fill buttons in the calculator are the vial sizes BPC-157 is commonly labelled in (5 mg and 10 mg). If yours is different, type it in.
Amounts of BPC-157 are usually written in micrograms (mcg), so the calculator opens in mcg.
For a field-by-field walkthrough and a guide to syringe types, see the main peptide calculator.
BPC-157 concentration table
Each labelled vial size at the same three round water volumes used across this site. It shows how the arithmetic behaves and is not a suggestion of what to use.
| Vial | Water added | Concentration | Each mark holds |
|---|---|---|---|
| 5 mg vial | 1 mL | 5 mg/mL | 50 mcg per unit |
| 5 mg vial | 2 mL | 2.5 mg/mL | 25 mcg per unit |
| 5 mg vial | 3 mL | 1.67 mg/mL | 16.7 mcg per unit |
| 10 mg vial | 1 mL | 10 mg/mL | 100 mcg per unit |
| 10 mg vial | 2 mL | 5 mg/mL | 50 mcg per unit |
| 10 mg vial | 3 mL | 3.33 mg/mL | 33.3 mcg per unit |
Every row for a given vial holds the same total. To compare volumes for a specific reading, use the BAC water calculator.
The formula, step by step
The “Try example numbers” button uses one fixed rule on every page: the smallest labelled vial, 2 mL of water, and whatever amount lands on the 10-unit mark. The amount is a by-product of that rule and not a typical or suggested BPC-157 dose.
- Concentration: 5 mg ÷ 2 mL = 2.5 mg/mL.
- The 10-unit mark is 10 ÷ 100 = 0.1 mL, which holds 0.1 × 2.5 = 0.25 mg (250 mcg).
- Run it forwards to check: 0.25 mg ÷ 2.5 mg/mL = 0.1 mL, and 0.1 × 100 = 10 units.
BPC-157: general reference
General educational reference for research purposes only. None of it is a recommendation, none of it is medical advice, and none of it is used by the calculator, which works only on the numbers you enter.
BPC-157 is a synthetic peptide made of 15 amino acids. Its sequence is based on a fragment of a protein found in human gastric juice. Almost all published work on it is preclinical, in cell and animal models, and only a few small human studies exist.
The name stands for Body Protection Compound. Most of the published research comes from a single group at the University of Zagreb, and nearly all of it was done in rodents.
Under the code PL 14736, the Croatian company Pliva took it into early clinical trials for ulcerative colitis in the 2000s. A phase 2 trial was run, but its results were never published in a peer-reviewed journal, and no regulator has approved it for any use.
The 2022 pharmacokinetic study also found that the share of an intramuscular injection reaching the bloodstream differed widely between species: about 14 to 19 percent in rats and 45 to 51 percent in dogs. That is one reason figures from animals cannot simply be carried over to people.
- Class
- Synthetic 15-amino-acid peptide
- Group
- Thymosins and BPC-157
- Also known as
- Body Protection Compound 157, PL 14736
- Molecular weight
- About 1,419 Da
- Half-life
- Under 30 minutes in animal studies. A 2022 pharmacokinetic study in rats and beagle dogs reported an elimination half-life of under 30 minutes after injection. Human pharmacokinetic data is very limited, so there is no established human half-life.
- Regulatory status
- Not approved as a medicine. BPC-157 is not approved as a medicine by the FDA, the EMA or any other major regulator. Its position in US pharmacy compounding has changed more than once since 2023 and was under FDA review in 2026, so check the FDA’s current bulk drug substances lists for the present status.
- Status in sport
- Prohibited at all times under the WADA Prohibited List since 2022 (section S0, unapproved substances).
- Labelled vial sizes
- 5 mg and 10 mg
Arithmetic slips to watch for with BPC-157
The vial is in mg, amounts are in mcg
BPC-157 vials are labelled in milligrams, while amounts are almost always written in micrograms. Mixing the two up changes a result by 1,000×. The calculator flags any amount that is larger than the whole vial.
Each unit mark can hold very little
With a 5 mg vial, one U-100 unit holds 50 mcg at 1 mL of water, 25 mcg at 2 mL and about 16.7 mcg at 3 mL. At high concentrations a small amount can fall below the first marking on the syringe, and the calculator says so when it does.
A 10 mg vial is not a 5 mg vial
The same water volume gives exactly double the concentration. A number of units worked out for one vial size does not carry over to the other, so recalculate for every new vial.
What this page does not do
The calculator performs mathematical conversions only. It does not recommend, suggest or verify any BPC-157 dose or schedule, it does not say how much water to add, and it does not say what BPC-157 is for, whether it is safe, or whether it is legal where you live. It is not medical advice, diagnosis or treatment, and Peptrack does not sell, supply or endorse any substance.
Always confirm measurements with a licensed healthcare provider or pharmacist. See the full disclaimer.
Sources
- He et al. (2022), pharmacokinetics of BPC-157 in rats and dogs, Frontiers in Pharmacology
- Sikiric et al. (2012), Focus on ulcerative colitis: stable gastric pentadecapeptide BPC 157 (PubMed)
- USADA: BPC-157 is prohibited under the WADA Prohibited List
- FDA: bulk drug substances used in compounding under section 503A
Facts last checked: September 2026. Regulatory status changes, so check the regulator’s own pages for the current position.
