BPC-157 Dosage (Why There Is No Established Human Dose)

By DoseGauge Editorial · Updated 2026-06-12 · 5 min read

BPC-157 has no FDA-approved dose and no established human dose. It is not approved by the FDA for any indication, and no controlled human trial has set a clinical dose. Informal community protocols often reference 250 to 500 mcg per day injected subcutaneously, but those figures come from preclinical work and online sources, not human trials. They are not a recommendation, and DoseGauge does not endorse them. The calculator on this page does one thing: it converts whatever dose you enter into the exact number of units to draw on a U-100 insulin syringe.

How BPC-157 is measured and dosed

BPC-157 is a synthetic 15-amino-acid peptide. It ships as a lyophilized (freeze-dried) powder in a vial labeled by weight, usually 5 mg or 10 mg. Doses, by contrast, are discussed in micrograms. There are 1,000 mcg in 1 mg, so a 5 mg vial contains 5,000 mcg of peptide.

That mismatch is where most dosing confusion starts. The vial tells you the total milligrams. A protocol tells you the microgram dose. Neither tells you how far to pull the plunger, because the syringe measures volume, not weight. To get from a microgram dose to a number of units, you need one more value: the concentration of the solution after you add bacteriostatic water.

The peer-reviewed reviews of BPC-157 describe it as a research peptide whose evidence base is almost entirely preclinical, with very limited human data. Neither review establishes a human dose. The microgram figures circulating online are not derived from human dose-finding studies, so the only number this page treats as reliable is the arithmetic that converts a dose you choose into syringe units.

What informal protocols reference

You will see the range 250 to 500 mcg per day, injected subcutaneously, repeated across forums and supplier pages. State the source plainly: these are informal, community-derived figures echoing preclinical animal data. No controlled human trial has validated them, and the published reviews do not present them as a clinical dose.

This matters for how you read the rest of this page. The worked example below uses 250 mcg only because it is the figure most people arrive with, not because DoseGauge considers it a correct or safe dose. There is no correct human dose to point you toward, because none has been established. If you are deciding whether to use BPC-157 at all, that decision belongs with a licensed clinician, not with a calculator and not with a forum.

Converting a dose to syringe units

Once you fix a microgram dose and a water volume, the math is fixed too. Three steps:

concentration (mcg/mL) = vial amount (mcg) / water added (mL)
draw volume (mL)        = dose (mcg) / concentration (mcg/mL)
units (U-100 syringe)   = draw volume (mL) x 100

Worked example. Take a 5 mg vial, which is 5,000 mcg, and reconstitute it with 2 mL of bacteriostatic water. The concentration is 5,000 / 2 = 2,500 mcg/mL. A 250 mcg dose is then 250 / 2,500 = 0.10 mL, which is 10 units on a U-100 insulin syringe. That vial holds 20 such doses.

Change the water and every number moves. Put the same 5 mg vial in 1 mL and the concentration doubles to 5,000 mcg/mL, so a 250 mcg dose becomes 0.05 mL, or 5 units. The dose in micrograms did not change; the units did, because the concentration changed. This is why copying someone else's unit count is unreliable: their vial size and water volume are almost never identical to yours.

The calculator runs these three lines for your specific vial size, water volume, and target dose, and it flags the draw volume so you can see whether your dose fits a single syringe. It performs the conversion. It does not tell you what dose to enter.

For the mechanics of mixing the vial in the first place, see how to reconstitute BPC-157. For the diluent itself, see what bacteriostatic water is. The formulas the calculator uses are documented on the methodology page.

Frequently asked questions

Is there a standard BPC-157 dose?

No. BPC-157 has no FDA-approved dosing guideline and no established human dose. The figures you see online, commonly 250 to 500 mcg daily, come from informal sources and preclinical animal studies, not controlled human trials. They should not be read as a recommendation. A licensed clinician is the right person to discuss whether and how a research peptide should be used.

Is BPC-157 dosed in mcg or mg?

Doses are discussed in micrograms (mcg), while the vial is labeled in milligrams (mg). One milligram is 1,000 micrograms, so a 5 mg vial contains 5,000 mcg. Because the syringe measures volume rather than weight, you convert the microgram dose to a draw volume using the concentration of your reconstituted solution, then multiply by 100 to get units on a U-100 syringe.

Why do two people get different units for the same dose?

Because units measure volume, and volume depends on concentration. If one person mixed a 5 mg vial in 1 mL and another mixed it in 2 mL, their concentrations differ by a factor of two, so the same microgram dose draws a different number of units. That is why the conversion has to use your own vial size and water volume rather than a figure copied from elsewhere.

Informational and educational only. Not medical advice. DoseGauge computes from the values you enter and does not recommend a dose. Talk to a licensed clinician before using any peptide or GLP-1 medication.