Page last checked 2026-09-07

How-to · reconstitution

How to reconstitute BPC-157 5 mg

In this example, 1 mL of bacteriostatic water in a 5 mg BPC-157 vial gives 5.00 mg/mL. An example 250 mcg amount is then 5.0 units on a U-100 syringe.

This example lands on a syringe line. More water makes a weaker mix and a bigger draw. Less water makes a stronger mix and a smaller one. The amount of BPC-157 stays the same. Use the diluent and volume specified for your product; the arithmetic alone does not choose them.

What matters first

Example water volume: 1 mL
Resulting strength: 5.00 mg/mL
Example 250 mcg dose: 5.0 U-100 units

No completed controlled human trial has shown which dose works for BPC-157. The range people report using is not a study result, tested schedule or recommendation.

no human dose shown to work

How much bacteriostatic water for a 5 mg BPC-157 vial?

◆ Unique to the 5 mg vialU-100 example draws

Water added	Concentration	Per U-100 unit	Example: 250 mcg =
1 mL	5.00 mg/mL	50 mcg	5.0 units
2 mL	2.50 mg/mL	25 mcg	10.0 units
3 mL	1.67 mg/mL	16.67 mcg	15.0 units

Straight arithmetic: concentration = 5 mg ÷ liquid volume, and 1 U-100 unit = 0.01 mL. The example column shows the math at 250 mcg; it is not a dose recommendation.

The table compares possible concentrations; it does not establish which diluent or volume suits your product. Follow its dispensing instructions.

“Hard to measure” means the example draw is below two U-100 units. “Won’t fit” means it exceeds this syringe’s capacity.

BPC-157 5 mg vial: example mixing volumes. Each row is what that amount draws on a U-100 syringe. 1 mL makes 5.00 mg/mL, or 50 mcg a unit, and 250 mcg is 5 units. 2 mL makes 2.50 mg/mL, or 25 mcg a unit, and 250 mcg is 10 units. 3 mL makes 1.67 mg/mL, or 16.67 mcg a unit, and 250 mcg is 15 units. The barrel drawn here is filled to 5 units, the draw at 1 mL. The sum is 5 mg divided by the liquid volume. One U-100 unit is 0.01 mL. — The 5 mg vial at 1 mL on a U-100 barrel. 250 mcg fills to 5.0 units, at 5.00 mg/mL.

Medically reviewed by Kenneth Montecillo, MD2026-09-07open the primary sources

What is BPC-157?

BPC-157 is a lab-made peptide, fifteen amino acids long, copied from one short stretch of a protein found in human stomach juice.

How many units is a documented dose from this vial?

The table above uses one worked example. These are the published quantities, converted into marks on a U-100 barrel at each listed liquid volume for a 5 mg vial. Where a quantity was never studied by injection, the row says so.

200–500 mcg — reported, not studied

200–500 mcg a day, by injection under the skin or by mouth. The review says this came from animal data, not a human dosing study.

Water added	Concentration	Draw, low to high
1 mL	5.00 mg/mL	4.0 to 10.0 units
2 mL	2.50 mg/mL	8.0 to 20.0 units
3 mL	1.67 mg/mL	12.0 to 30.0 units

indirect evidenceMateescu DM, Gavrilescu DM, Constantinescu FE, Oancea C, Ilie AC, Folescu R, Popa MD, Iurciuc S, Muresan CO, Enache A. BPC-157 as an Investigational Peptide Therapeutic: Biopharmaceutical Challenges, Formulation Strategies, and Translational Development Barriers. Pharmaceutics 2026;18(5):625 — states the quantity used off-label and that it was extrapolated informally from rodent data, with no human pharmacokinetic or safety anchor · retrieved 2026-08-13

A whole-unit draw from an amount reported in practice

Every offered water volume puts the plunger on a printed syringe mark, making this vial easier to read. The amounts come from reported practice, not a dose established by a trial.

3Read the full vial record — 3 notes

Three volumes, three whole numbers

Not one of the listed volumes drops the plunger between graduations here. Each result is a whole unit on the illustrated scale. That does not measure how precisely someone can draw it or whether the actual syringe has the same marks.

The useful distinction is that these examples do not require rounding a fractional unit to reach a line. Input errors and equipment limits remain separate questions even when the displayed number looks simple.

The vial is a long way ahead of the evidence

At the worked amount, one vial contains twenty draws. The cited human evidence consists of small uncontrolled reports with different treatment contexts. It does not establish a course of twenty injections matching this vial example.

A vial that lasts is usually reassuring. Here it only means the arithmetic outruns the evidence sooner. The count is a fact about the glass, not about the compound.

The portion count does not supply storage instructions

No cited source gives a storage window for a reconstituted vial, so no estimate is shown. This is an important unknown, not a number to guess.

With twenty draws in the vial, the mixed solution may sit for a long time before the powder runs out. No applicable stability measurement is supplied with this example.

How do you mix it, step by step?

Wipe both stoppers with an alcohol swab and let them dry.
Check the product’s mixing instructions for the correct diluent and volume before drawing it up.
Let the water run slowly down the inside wall of the BPC-157 vial, rather than jetting it onto the powder.
Follow the product’s instructions for mixing and checking the solution before use. Do not assume every powder uses the same method.
Store it as the dispensing label directs. What happens after mixing differs by product — some labels direct against refrigerating the mixed solution at all.

What if your water volume is not on the table?

The calculator lets you enter your product’s vial strength and mixing volume, then shows the arithmetic for your syringe.

Open the BPC-157 calculator →

Where to read next about BPC-157

The arithmetic on this page is only half the question. These are the pages that carry the other half.

BPC-157 — class, half-life and regulatory standing

No approved brand name is listed for BPC-157.

Every calculator on this site, BPC-157 and the rest

Every intermediate value is printed, for BPC-157 or any other vial.

Browse BPC-157 guides by vial strength

Explore water volumes, concentrations and example draws alongside BPC-157.

Where BPC-157 stands with the regulator, and when

Approval status, proceedings and the date attached to each, with BPC-157 as one example

1primary source, each with the day we read it — open the documents used on this page

Mateescu DM, Gavrilescu DM, Constantinescu FE, Oancea C, Ilie AC, Folescu R, Popa MD, Iurciuc S, Muresan CO, Enache A. BPC-157 as an Investigational Peptide Therapeutic: Biopharmaceutical Challenges, Formulation Strategies, and Translational Development Barriers. Pharmaceutics 2026;18(5):625 — states the quantity used off-label and that it was extrapolated informally from rodent data, with no human pharmacokinetic or safety anchorretrieved 2026-08-13indirect evidence