BPC-157 Dosage Calculator
Calculate exact BPC-157 injection volumes. Pre-filled for a 5mg vial with 2ml BAC water (2,500 mcg/ml). A 250mcg dose = 10 units.
BPC-157 (Body Protection Compound 157) is a synthetic 15-amino-acid peptide derived from a protein found in human gastric juice. In animal studies it has been reported to promote angiogenesis and support tendon, ligament, gut and nerve healing. Human trials are limited and it is not FDA-approved — descriptions here summarize the preclinical literature, not proven clinical effects.
For a 5mg BPC-157 vial: add 2ml of bacteriostatic water → concentration is exactly 2500 mcg/ml. For the standard 250mcg dose, inject 0.10ml (10 units) on a 100-unit syringe.
Dose Reference Table
Pre-calculated for a 5mg vial + 2ml BAC water = 2,500 mcg/ml concentration. Using a 100-unit (1ml) insulin syringe.
| Dose | Inject Volume (ml) | Syringe Units |
|---|---|---|
| 100mcg | 0.040 ml | 4 units |
| 200mcg | 0.080 ml | 8 units |
| 250mcg | 0.100 ml | 10 units |
| 500mcg | 0.200 ml | 20 units |
| 750mcg | 0.300 ml | 30 units |
| 1000mcg | 0.400 ml | 40 units |
About BPC-157
BPC-157 (Body Protection Compound 157) is a synthetic pentadecapeptide consisting of 15 amino acids. It was originally derived from a portion of body protection compound found in human gastric juice. In research settings — almost entirely rat models — BPC-157 has been studied for cytoprotective and tissue-healing effects across multiple organ systems. Human evidence remains limited to small studies, so treat claims about its effects as preclinical, not proven.
Research has explored BPC-157 for tendon, ligament, muscle, and nerve repair, as well as gastric and intestinal protection. It appears to work through multiple mechanisms including angiogenesis stimulation, growth hormone receptor modulation, and nitric oxide synthesis.
Sources: preclinical reviews include Sikirić et al. 2024 (PubMed 38675421) and BPC 157 and wound healing, 2021 (PubMed 34267654).
BPC-157 is typically supplied in 2mg or 5mg vials. The standard reconstitution uses 2ml of bacteriostatic water per 5mg vial, yielding a concentration of 2,500 mcg/ml. At this concentration, the typical 250mcg dose requires just 0.1ml — exactly 10 units on a 100-unit insulin syringe, making dosing easy to measure.
In research protocols, BPC-157 is typically administered via subcutaneous injection near the site of concern, or systemically, usually twice daily due to its relatively short half-life of 4–6 hours.
For step-by-step injection technique, see the guide on how to inject peptides.
How this calculator works
Every result comes from the same three formulas used for any lyophilized peptide: concentration (mcg/ml) = vial mg × 1,000 ÷ BAC water ml; injection volume (ml) = desired dose mcg ÷ concentration; syringe units = injection volume ml × 100 on a U-100 syringe.
For the preset BPC-157 setup on this page: a 5mg vial mixed with 2ml of bacteriostatic water gives a concentration of 2,500 mcg/ml. A 250mcg dose then needs 0.10ml, which is 10 units on a 100-unit insulin syringe.
The full methodology, with worked examples and the assumptions behind each formula, is on the methodology page.
Accuracy & limitations
The arithmetic itself is exact — the same inputs always produce the same output. Real-world accuracy depends on things outside the calculator: actual vial contents can vary slightly from the labeled amount within manufacturing tolerance, the BAC water volume should be measured carefully, and syringe readings are taken at the bottom edge of the plunger. Reconstituted peptides also degrade over time (the common guidance is to use within about 28 days refrigerated), which the math does not model. This tool does arithmetic only — it does not recommend doses, and it is not medical advice.
Last reviewed: September 2026 · Content, formulas and sources checked by Kanika