The single biggest reason new BPC-157 users don't see results isn't the peptide — it's the math. Underdose by mistake and you'll think the compound doesn't work. Overdose and you'll waste a $150 vial in two weeks. This guide covers the exact reconstitution math, insulin-syringe conversions, and the dosing protocols that biohackers have converged on for the most common use cases.
Step 1: Understanding the Vial
Most BPC-157 ships as a 5 mg lyophilized powder in a sealed glass vial. Some vendors offer 2 mg or 10 mg vials — the math adjusts proportionately. You'll also need:
- Bacteriostatic water (BAC water) — typically 2 or 3 mL
- A 1 mL or 3 mL reconstitution syringe with a drawing needle
- U-100 insulin syringes (0.5 mL, 29–31 gauge) for injection
- Alcohol swabs
Step 2: The Reconstitution Math
The goal is to end up with a concentration you can dose accurately in insulin-syringe units ("ticks"). Most users target 250 mcg per dose.
Standard: 5 mg vial + 2 mL BAC water
- Concentration: 5 mg ÷ 2 mL = 2,500 mcg/mL = 250 mcg per 0.1 mL
- 0.1 mL = 10 units on a U-100 insulin syringe
- Result: 10 ticks = 250 mcg. Simple and hard to misread.
Alternative: 5 mg vial + 2.5 mL BAC water
- Concentration: 2,000 mcg/mL = 200 mcg per 0.1 mL
- 10 ticks = 200 mcg; 12.5 ticks = 250 mcg
Step 3: The Dose Conversion Table
| Target dose | 5 mg / 2 mL dilution | 5 mg / 3 mL dilution |
|---|---|---|
| 200 mcg | 8 ticks | 12 ticks |
| 250 mcg | 10 ticks | 15 ticks |
| 500 mcg | 20 ticks | 30 ticks |
| 750 mcg | 30 ticks | 45 ticks |
Step 4: How to Mix (Correctly)
- Let both the BAC water and the lyophilized vial reach room temperature. Cold water denatures peptides less, but cold glass cracks.
- Swab both rubber stoppers with alcohol.
- Draw your measured BAC water into the reconstitution syringe.
- Angle the needle against the glass wall and let the water run down the side slowly. Never shoot BAC water directly onto the fluffy peptide cake — it denatures the fragile molecule.
- Do not shake. Roll the vial gently between your palms for 20–30 seconds until fully dissolved.
- Store reconstituted BPC-157 refrigerated at 2–8°C. Stable for roughly 30 days.
Protocol Library: Dosing by Goal
Tendon / Ligament Repair
250 mcg SubQ, 2× daily (morning + night), injected as close to the injured site as anatomically safe. 4–6 week cycle. See our tendon results breakdown.
Gut / GI Healing
500 mcg oral capsule per day, taken on an empty stomach 30 min before food. Oral is the preferred route here — the peptide's natural gastric affinity means it survives digestion better than most. See oral BPC-157 tips.
General Recovery / Biohacker Stack
250 mcg SubQ once daily, abdominal fat, same time each day. 4-week cycle, 2 weeks off.
Systemic / Multi-site Injury
500 mcg SubQ once daily for the first 2 weeks (loading), then 250 mcg daily for weeks 3–6.
Common Mistakes to Avoid
- Confusing mcg and mg — 1 mg = 1,000 mcg. A 10× error here is common and expensive.
- Using sterile water instead of bacteriostatic — sterile water is fine for single-use but lacks the benzyl alcohol preservative, so your vial will go off in 48 hours.
- Shaking vigorously — destroys peptide bonds. Always swirl gently.
- Room-temperature storage — BPC-157 degrades fast above 8°C. Keep it refrigerated.
- Not verifying vial strength — assuming 5 mg when the vial is 2 mg will quadruple your intended dose.
Storage & Shelf Life
Unreconstituted lyophilized BPC-157 is stable at 2–8°C for 24+ months. Once reconstituted, refrigerate and use within 30 days. For travel, insulated carriers with an ice pack keep it viable for 24–48 hours.
Sourcing note: dosing accuracy is meaningless if the vial is underfilled. Always buy from vendors with third-party HPLC COAs — see our top-ranked tested vendors and our fake-spotting guide.
