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BPC-157 Dosage Calculator (Reconstitution and Syringe Units)

Enter the vial strength, how much bacteriostatic water was added and the dose your clinician wrote, and the calculator returns the concentration, the volume to draw, the units on a U-100 insulin syringe and how many doses the vial holds. It is dimensional analysis on your prescription, with the regulatory status of BPC-157 stated plainly.

  • Calculator
  • About 4 min
  • Reconstitution arithmetic (Boyer, Math for Nurses)
  • Runs in your browser, nothing is sent
  • Medical review: Medical review pending
Open the calculator

What this calculator works out

BPC-157 is supplied as a freeze-dried powder that has to be dissolved before it can be drawn up, and the dose is written in micrograms while the syringe is marked in units. Three conversions sit between the prescription and the needle, and each one is a place where errors happen. This page does the conversions and shows its work.

  1. 1

    Concentration after reconstitution

    Micrograms per milliliter once the diluent is in the vial: the vial's milligrams times 1,000, divided by the milliliters of bacteriostatic water added. This is the number everything else depends on, and it changes every time a different volume of water is used.

  2. 2

    Volume and syringe units per dose

    The prescribed micrograms divided by the concentration gives milliliters; on a U-100 insulin syringe each 0.01 mL is one unit, so units are milliliters times 100. Both are shown so you can check the syringe markings against the number.

  3. 3

    Doses per vial, and what BPC-157 is

    How many full doses the vial holds at that prescription, so you know when it runs out. The page also states the compound's status with the date behind each part: not approved by the FDA for any use; on the FDA's section 503A pages, checked on October 8, 2026, no longer in category 2 but not on the 503A bulks list either; and prohibited in sport under the World Anti-Doping Agency's S0 class, as it has been since the 2022 Prohibited List.

How this compares with a typical online quiz

FeatureTypical free quizRegenerated.com
Dose entered by you from a prescriptionOften pre-filled with a default doseAlways yours; no default, no suggested number
Regulatory status statedRarelyYes, with each FDA page's own date and our check date
Formula shown with a worked exampleSometimesYes, with the source textbook
Sells or links to peptidesOftenNever
Human evidence described honestlyRarelyYes: animal studies and case series, no randomized trial in people
Answers sent to a serverOftenNever; scored in your browser, counts-only events

What BPC-157 is, and where it stands with regulators

BPC-157 (body protection compound 157) is a synthetic chain of fifteen amino acids based on a fragment of a protein found in human gastric juice. It has been studied for more than thirty years, almost entirely in rodents and almost entirely by one research group in Zagreb, in models of gut injury, tendon and muscle healing, wound healing and organ protection. Those studies are the source of its reputation. The human literature consists of small case series and conference reports; we could not find a completed randomized controlled trial in people published in a peer-reviewed journal, which means there is no established dose, no established safety profile and no proven benefit for any condition in humans.

BPC-157 is not approved by the FDA, or by any regulator, as a medicine. In September 2023 the FDA placed it in category 2 of the bulk drug substances nominated for compounding under section 503A, the category for substances that raise significant safety risks, citing uncertainty about immune reactions to an injected peptide, impurities and characterization of the active ingredient. That listing has since changed, and the change is easy to misread. The FDA's 503A category list, updated May 14, 2026, no longer carries BPC-157 in category 2, and the agency's safety-risk page, current as of April 22, 2026, lists it instead among the nominations that were withdrawn by the nominators, with the same safety concerns still set out on the page. We checked both on October 8, 2026. A withdrawn nomination is a decision by whoever nominated the substance, not an FDA finding that the substance is safe. It is also not permission to compound: section 503A lets a pharmacy compound from a bulk substance only if that substance has a USP or NF monograph, is a component of an FDA-approved drug product, or appears on the 503A bulks list, and BPC-157 meets none of the three, so a US pharmacy has no route under 503A to compound it from bulk. The FDA consulted its Pharmacy Compounding Advisory Committee on July 23, 2026 on whether BPC-157-related bulk substances should go on that list, and the agency's own briefing document for that meeting proposed that they not be included; the committee's advice is non-binding, and as of October 8, 2026 the FDA had not acted on it. BPC-157 is also named as an example in section S0 (non-approved substances) of the World Anti-Doping Agency's Prohibited List, as it has been since the 2022 List and still is on the List in effect from January 1, 2026, so athletes under anti-doping rules cannot use it.

None of that stops this page from doing arithmetic. If a clinician has prescribed BPC-157 and you have a vial in front of you, correct reconstitution math matters whatever the regulatory debate concludes. If you do not have a prescription, the honest reading of the evidence is that you are looking at an investigational compound with a thin human record, and the clinic conversation belongs before the syringe.

Published research amounts, as information only

The rodent studies behind BPC-157 most often used 10 micrograms per kilogram of body weight, and in many experiments a second, far lower amount of 10 nanograms per kilogram, given by injection or in drinking water (Sikiric and colleagues, 2011). Those are animal doses in animal models, and they do not translate into a human dose by simple scaling. Clinics that prescribe the peptide write their own amounts, and that prescription is the only number this calculator takes. Nothing on this page suggests a dose, and a figure from a forum post or a research paper is not a prescription.

Methodology and sources

The calculator applies standard dimensional analysis for reconstituted injectable drugs, as taught in nursing dosage texts such as Boyer's Math for Nurses (9th edition, Wolters Kluwer, 2016) and practiced under USP General Chapter 797 for sterile preparations. The method is not specific to BPC-157 or to any population; it is the same arithmetic used for any lyophilized vial. Its limits are practical: it assumes the vial label is accurate, that the full stated volume of diluent went in, that a U-100 insulin syringe is used (where 100 units equal 1 mL), and that the dose is written in micrograms. It cannot check whether the dose itself is appropriate, and it has no way of knowing what is actually in an unregulated vial.

The arithmetic runs in three steps. Concentration in mcg/mL equals the vial's milligrams times 1,000, divided by the milliliters of bacteriostatic water added. Volume per dose in mL equals the prescribed micrograms divided by that concentration. Units on a U-100 syringe equal milliliters times 100, and doses per vial is the vial's micrograms divided by the dose, rounded down. Worked example: a 5 mg vial reconstituted with 2 mL of bacteriostatic water holds 5,000 / 2 = 2,500 mcg/mL. A prescribed 250 mcg dose is 250 / 2,500 = 0.1 mL, which is 10 units on a U-100 syringe, and the vial holds 5,000 / 250 = 20 such doses. Change the water to 1 mL and the same dose becomes 0.05 mL, or 5 units, which is why the diluent volume must be entered exactly as it was added.

The result bands on this page are about measurability, not about the dose. Below about 2 units the markings on a standard insulin syringe are too coarse to measure reliably, and above 100 units the dose exceeds what a 1 mL syringe holds; both are reasons to check the numbers with the prescriber or pharmacist rather than to change anything yourself. The regulatory facts come from the FDA's 503A category list updated May 14, 2026, the agency's safety-risk page current as of April 22, 2026, its briefing document for the Pharmacy Compounding Advisory Committee meeting of July 23 and 24, 2026, and the World Anti-Doping Agency's Prohibited List in effect from January 1, 2026, each checked on October 8, 2026.

Medical review: Medical review pending. Last updated .

References

  1. Boyer MJ. Math for Nurses: A Pocket Guide to Dosage Calculation and Drug Preparation. 9th ed. Philadelphia: Wolters Kluwer; 2016. ISBN 9781496303417
  2. US Food and Drug Administration. Bulk drug substances nominated for use in compounding under section 503A of the Federal Food, Drug, and Cosmetic Act (category list updated May 14, 2026) and Certain bulk drug substances for use in compounding that may present significant safety risks (content current as of April 22, 2026). Checked October 8, 2026. https://www.fda.gov/media/94155/download and https://www.fda.gov/drugs/human-drug-compounding/certain-bulk-drug-substances-use-compounding-may-present-significant-safety-risks
  3. Sikiric P, Seiwerth S, Rucman R, et al. Stable gastric pentadecapeptide BPC 157: novel therapy in gastrointestinal tract. Curr Pharm Des. 2011;17(16):1612-1632. doi:10.2174/138161211796196954
  4. Seiwerth S, Milavic M, Vukojevic J, et al. Stable gastric pentadecapeptide BPC 157 and wound healing. Front Pharmacol. 2021;12:627533. doi:10.3389/fphar.2021.627533
  5. World Anti-Doping Agency. The Prohibited List 2026, in effect January 1, 2026, section S0 (non-approved substances), which names BPC-157 as an example; BPC-157 was first named under S0 in the 2022 List. Checked October 8, 2026. https://www.wada-ama.org/en/prohibited-list

BPC-157 Dosage Calculator (Reconstitution and Syringe Units) FAQ

Enter the vial strength in milligrams exactly as printed (5), the diluent in milliliters exactly as added, and the dose in micrograms as written on the prescription. The calculator does the mg to mcg conversion (1 mg is 1,000 mcg). If the prescription is written in milligrams, multiply by 1,000 before entering it: 0.25 mg is 250 mcg.

Whatever your prescriber or pharmacy told you, and enter that exact volume. The calculator does not choose a volume. More water makes each dose a larger, easier-to-read number of units on the syringe; less water makes it smaller. If the units come out under 2 or over 100 at the volume you were given, ask the pharmacist whether a different diluent volume would make the dose easier to measure. Do not adjust the dose to fit the syringe.

It is not an approved drug anywhere, and it is not a substance a US pharmacy may compound from bulk. The FDA placed it in 503A category 2 for significant safety risks in September 2023. Its 503A category list updated May 14, 2026 no longer carries it in category 2, and its safety-risk page, current as of April 22, 2026, lists it among the nominations withdrawn by the nominators; we checked both on October 8, 2026. A withdrawn nomination is a decision by whoever nominated the substance, not an FDA finding that the substance is safe, and it is not permission to compound. Section 503A lets a pharmacy compound from a bulk substance only if that substance has a USP or NF monograph, is a component of an FDA-approved drug product, or appears on the 503A bulks list, and BPC-157 meets none of the three. The FDA consulted its advisory committee on July 23, 2026 about adding it, having proposed in its own briefing document that it not be included; that advice is non-binding and the agency had not acted on it as of October 8, 2026. For athletes it is a prohibited substance under the World Anti-Doping Agency list, and products sold online as research chemicals are not regulated as medicines at all. Whether a particular clinic can lawfully prescribe it is a question for that clinic and its counsel, not something this page can answer.

In rodents, across many published experiments, it has accelerated healing of tendon, muscle, gut and skin injuries. In humans the evidence is limited to case series and anecdote; no randomized controlled trial has been published. That gap is the honest answer. A clinic that presents the animal data as proof of human benefit is overstating what is known.

Yes, in reverse. Enter the vial strength and the diluent volume the pharmacy used, then enter the micrograms the clinic says that number of units delivers. If the units the calculator returns match what you were told, the two agree. If they differ, call the clinic before injecting anything; unit confusion is the most common way injectable peptide doses go wrong.

Yes. Your answers and the numbers you enter are scored in your browser and are never sent to us. They stay in this browser tab so you can return to your result, and closing the tab clears them. The only thing the page sends us is a counts-only event: which test was started or completed, the result band and the headline number, with no answers, no entered values and no account. There is nothing to sign up for.

Talk to a clinic that puts physician oversight before the syringe

Browse US clinics offering peptide therapy. Look for a prescribing physician, a licensed pharmacy source, written dosing instructions, an honest account of BPC-157's regulatory status and a plan for measuring whether it helps. A listing on Regenerated.com is not an endorsement.

Browse peptide therapy clinics

A listing is not a treatment endorsement. Read each clinic's published checks and talk to your clinician before starting any treatment.

Important: This calculator is arithmetic for a dose a clinician prescribed. It is not a diagnosis, not a dose suggestion and not a treatment recommendation, and nothing on this page should be read as encouragement to use BPC-157, which is not an approved medicine. Only the prescriber and the dispensing pharmacist can confirm what you should draw up. If your symptoms are severe or sudden, seek urgent medical care.