Page last checked 2026-09-07

How-to · reconstitution

How to reconstitute BPC-157 10 mg

In this example, 2 mL of bacteriostatic water in a 10 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: 2 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 10 mg BPC-157 vial?

◆ Unique to the 10 mg vialU-100 example draws

Water added	Concentration	Per U-100 unit	Example: 250 mcg =
1 mL	10.00 mg/mL	100 mcg	2.5 units
2 mL	5.00 mg/mL	50 mcg	5.0 units
3 mL	3.33 mg/mL	33.33 mcg	7.5 units

Straight arithmetic: concentration = 10 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 10 mg vial: example mixing volumes. Each row is what that amount draws on a U-100 syringe. 1 mL makes 10.00 mg/mL, or 100 mcg a unit, and 250 mcg is 2.5 units. 2 mL makes 5.00 mg/mL, or 50 mcg a unit, and 250 mcg is 5 units. 3 mL makes 3.33 mg/mL, or 33.33 mcg a unit, and 250 mcg is 7.5 units. The barrel drawn here is filled to 5 units, the draw at 2 mL. The sum is 10 mg divided by the liquid volume. One U-100 unit is 0.01 mL. — The 10 mg vial at 2 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 10 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	10.00 mg/mL	2.0 to 5.0 units
2 mL	5.00 mg/mL	4.0 to 10.0 units
3 mL	3.33 mg/mL	6.0 to 15.0 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

Double the strength, and the readings stop landing on lines

Doubling the vial strength at the same liquid volume halves the draw for the same dose. Here two of the three displayed water examples leave the result between whole-unit marks.

3Read the full vial record — 3 notes

Only the middle volume reads cleanly

Of the three listed, one puts the draw on a whole number of units. The other two land on a half unit with no matching whole-unit line in the illustration. At a draw this small, half a mark is a large slice of what you are measuring.

The bigger vial therefore changes more than the portion count. Check the concentration and exact result together, and compare them with the actual syringe before treating a familiar unit number as a matching dose.

The smallest water example produces the shortest draw

The strongest mix on this page produces the smallest draw on this page. The example combines a small fractional reading with a high concentration. A given volume difference then represents a larger drug amount than it would in a weaker solution.

More water produces a larger calculated draw, but that is not a direction to change a product’s dilution. Neither the vial’s physical capacity nor its preparation instructions can be inferred from the drug mass in the title.

Forty draws with no expiry to bound them

This vial holds twice as many draws as its sibling and the page still gives no figure for how long the mixed liquid lasts. That does not establish when either prepared product expires or how many portions remain usable.

These facts do not show that the mixed vial remains stable. No applicable stability result is supplied here, so the calculation cannot establish a use-by date for a preparation.

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.

How strong the evidence is for BPC-157

The strongest source for BPC-157 is no human dose shown to work.

Vial, water and dose for any peptide, with BPC-157 as one example

U-100, U-50 and U-40 barrels each read differently, including BPC-157

Find mixing guides for BPC-157

Find vial-specific mixing tables as you explore BPC-157.

Primary regulatory documents, including BPC-157

Every URL was fetched and live on its retrieval date, BPC-157 or otherwise.

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