BPC-157 Dosage Calculator
BPC-157 is a 15-amino-acid fragment of a protein found in gastric juice. It is sold as a 5 mg or 10 mg dry-powder vial, and because the doses people talk about are in micrograms, the mg-to-mcg conversion causes more mistakes here than with any other peptide.
This page converts a BPC-157 vial and a microgram dose into insulin-syringe units, and it shows why the amount of water you add changes the units but never the dose.
Forum protocols onlyThe ranges you see online come from forums and animal-study extrapolation. No human dose-finding trial exists. · Reviewed by the FormBlends Editorial Standards Team · 2026-09-03
Forum protocols onlyNo FDA label and no human dose-finding trial. The 250 to 500 mcg per day figures online are extrapolated from animal studies.
Enter your dose to see the units to draw, the volume in mL, and how long the vial lasts.
FDA compounding status (2026-07-23): Not lawfully compoundable yet. Removed from Category 2 when its nomination was withdrawn (effective about 04/22/2026). Full status table and sources
What the BPC-157 dose evidence actually is
No FDA label and no human dose-finding trial. The 250 to 500 mcg per day figures online are extrapolated from animal studies.
Human evidence for BPC-157 is thin. A 2025 review found only three small pilot studies in people, and a registered phase 1 trial has no published results. Nearly everything written about dosing traces back to rodent studies and to forum protocols that repeat each other.
That is why this page does not pre-fill a dose. The 250 mcg and 500 mcg figures you will see elsewhere are not from a label or a human trial. If a prescriber gave you a dose, enter that. If nobody did, the calculator can still show you the arithmetic for any number, and that is all it should do.
BPC-157 units at each water volume
The table uses a 5 mg vial. Each cell is the draw on a U-100 insulin syringe for that dose at that water volume. Cells above 100 units do not fit a 1 mL syringe; cells below 10 units sit in the part of a 1 mL barrel where measurement error rises, and a 0.5 mL or 0.3 mL syringe reads them better.
| Dose | 5 mg + 1 mL5 mg/mL | 5 mg + 2 mL2.5 mg/mL | 5 mg + 3 mL1.667 mg/mL | 5 mg + 5 mL1 mg/mL |
|---|---|---|---|---|
| 100 mcg | 2 units | 4 units | 6 units | 10 units |
| 250 mcg | 5 units | 10 units | 15 units | 25 units |
| 500 mcg | 10 units | 20 units | 30 units | 50 units |
| 1000 mcg | 20 units | 40 units | 60 units | 100 units |
The doses in this table are round numbers chosen to show the arithmetic. They are not recommendations; no label or human dose-finding trial exists for BPC-157.
Mixing BPC-157
The classic mix is 5 mg with 2 mL of bacteriostatic water, which gives 2.5 mg per mL, or 25 mcg per unit. At that strength 250 mcg is 10 units and 500 mcg is 20 units, both easy to read on any insulin syringe.
Mixing 5 mg with 1 mL doubles the concentration to 5 mg per mL, so 250 mcg becomes 5 units. That is measurable on a 0.3 mL syringe with half-unit marks, but on a 1 mL syringe with 2-unit marks it sits between graduations. More water is usually the better choice for microgram doses.
Remember that 5 mg is 5,000 mcg. Entering 5 in the dose box when you meant 500 mcg is the single most common error in the calculator logs of every tool we studied.
Storing BPC-157 after mixing
Refrigerate after mixing at 2 to 8 degrees Celsius. A 5 mg vial at 250 mcg per dose holds 20 doses, which at once daily runs out at day 20, inside the 28-day multiple-dose ceiling. At 250 mcg every other day it would take 40 days, so the vial would outlast the ceiling; the calculator flags this.
BPC-157 calculator questions
How much bac water for 5 mg BPC-157?
Two millilitres is the most common choice. It gives 2.5 mg per mL, so every unit on the syringe holds 25 mcg and a 250 mcg dose is 10 units. One millilitre works too, but microgram doses then land on very small draws.
How many units is 250 mcg of BPC-157?
Ten units if you mixed 5 mg with 2 mL. Five units if you mixed 5 mg with 1 mL. Twenty units if you mixed 5 mg with 4 mL. The units follow the water, the dose does not.
Is there an FDA-approved BPC-157 dose?
No. BPC-157 is not an approved drug and no human dose-finding trial has been published. The calculator shows the arithmetic for whatever dose you enter and does not suggest one.
Can I use the BPC-157 and TB-500 blend vial with this calculator?
Yes. Switch on the blend option, enter each component's milligrams from the label, and the result shows how much of each you draw per dose. A 10 mg blend labelled 5 mg BPC-157 plus 5 mg TB-500 mixed with 2 mL delivers 250 mcg of each in 10 units.
Sources
BPC-157 guide
Evidence, mechanism, side effects and regulatory status.
BPC-157 through FormBlends
Provider review, licensed pharmacy, labelled concentration.
The full peptide calculator
All peptides, pre-mixed vials, blends, mistakes and concentration changes.
Free downloads built from this calculator's math
Peptide Dosing and Reconstitution Chart 2026
20 pages, 12 peptides, every vial size, units at five water volumes, printable vial labels. PDF.
Bacteriostatic Water Cheat Sheet
How much to add, what one unit holds, the 28-day rule stated correctly, four mistakes to avoid. PDF.
28-Day GLP-1 Injection Tracker
Dose, units drawn, site, weight, side effects and the vial counting down. PDF and spreadsheet.
Other peptide calculators
Arithmetic only. This page converts the dose you enter into units and millilitres. It does not recommend a dose. BPC-157 is not an FDA-approved drug and no human dose-finding trial exists; any dose you enter should come from a prescriber. FormBlends connects patients with licensed providers and pharmacies and does not prescribe or dispense.
