🧬 BPC-157 Dosage Calculator
Select your injection frequency, dose per injection, vial size, and BAC water volume — concentration, draw volume, daily totals, and vial duration computed instantly.
BPC-157 Reconstitution & Dose Calculator
BPC-157 (Body Protection Compound-157) is a synthetic pentadecapeptide consisting of 15 amino acids derived from a protective gastric protein. It is among the most-researched peptides for injury healing, tissue repair, angiogenesis, gut protection, and tendon/ligament regeneration. Unlike GLP-1 agonists, BPC-157 has a short half-life (~4 hours via subcutaneous injection) which means protocols typically split the daily dose into two injections — or use a single morning dose for systemic effects. It is supplied as lyophilised powder and must be reconstituted before use.
Select your injection frequency, dose per injection, vial size, and bacteriostatic water volume. The calculator returns exact concentration, per-dose draw volume, daily total volume, and how many days your vial will last at that protocol.
You have a 5 mg BPC-157 vial, add 2 mL BAC water, and inject 500 mcg twice daily on a 0.3 mL syringe.
- Concentration = (5 × 1,000) ÷ 2 = 2,500 mcg/mL
- Per-dose volume = 500 ÷ 2,500 = 0.2 mL (20 units)
- Daily volume = 0.2 × 2 injections = 0.4 mL
- Vial duration = 2,000 mL ÷ 1,000 mcg/day = 5 days
Injection frequency
Dose per injection
BPC-157 vial size
Bacteriostatic water added
Syringe volume
Select your inputs above to generate your draw guide.
Reference draw uses a 5 mg vial + 2 mL BAC water = 2,500 mcg/mL. BPC-157 is typically injected subcutaneously near the injury site or systemically in the abdomen.
| Protocol | Dose / Injection | Daily Total | Frequency | Draw (2,500 mcg/mL) | 5mg Vial Lasts |
|---|---|---|---|---|---|
| Low dose | 250 mcg | 250 mcg | Once daily | 10 units U-100 | 20 days |
| Standard | 500 mcg | 500 mcg | Once daily | 20 units U-100 | 10 days |
| Split dose | 500 mcg | 1,000 mcg | Twice daily | 20 units U-100 | 5 days |
| High dose | 1,000 mcg | 1,000 mcg | Once daily | 40 units U-100 | 5 days |
BPC-157 is typically used for 4–12 week cycles with a break of similar duration. Longer cycles have been used in research without reported safety issues, but remain unstudied in humans at these durations.
BPC-157 Calculator — Frequently Asked Questions
Should I inject BPC-157 near the injury or systemically?
Both approaches are used in research. Localised injection directly near (not into) an injured tendon, ligament, or muscle may produce faster tissue-specific effects due to higher local concentrations. Systemic injection (abdominal subcutaneous fat) distributes the compound and is preferred when targeting gut healing, systemic inflammation, or multiple injury sites simultaneously. Many protocols use systemic injection for convenience, with research suggesting comparable outcomes for conditions like leaky gut or general tissue repair.
What is BPC-157's half-life and why does it matter for dosing frequency?
BPC-157 has a relatively short half-life of approximately 4 hours via subcutaneous injection. This means once-daily dosing achieves systemic coverage for only part of the day. Twice-daily dosing (morning and evening) maintains more consistent circulating levels, which some protocols use for injury recovery where continuous signalling may be beneficial. For gut-related indications, the oral route (no reconstitution needed) may maintain GI luminal levels more efficiently due to direct contact.
How long should a BPC-157 cycle run?
Research protocols vary from 2 weeks (acute injury) to 12+ weeks (chronic conditions). A common approach is 4–8 weeks on, followed by a break of equal duration. Unlike many peptides, BPC-157 does not appear to downregulate its receptors with prolonged use, but extended protocols beyond 3 months remain insufficiently studied in humans. Acute injury protocols may use shorter runs with higher daily doses; chronic gut or systemic protocols tend to use lower doses over longer periods.
Can BPC-157 be stacked with TB-500?
Yes — BPC-157 + TB-500 is one of the most well-known peptide stacks in recovery research. They work through complementary mechanisms: BPC-157 acts primarily via local growth factor upregulation, angiogenesis (VEGF), and direct tendon/ligament cell stimulation; TB-500 (Thymosin β4) promotes systemic cell migration, actin polymerisation, and anti-inflammatory effects. Used together, they address both local and systemic aspects of tissue repair. A common research stack is 500 mcg BPC-157 daily + 2 mg TB-500 twice weekly.