How many units is 250 mcg of BPC-157?

It depends entirely on how much water you added. In a 5 mg vial reconstituted with 2 mL, the concentration is 2.5 mg/mL, so 250 mcg is 0.1 mL, which is 10 units on a U-100 insulin syringe. In the same vial with 1 mL of water it is 5 units, and with 3 mL it is 15 units.

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

2 mL is the usual choice. It gives 2.5 mg/mL, which puts the commonly reported range of 100 mcg to 1000 mcg between roughly 4 and 40 units. Aim for a draw between about 10 and 50 units, where the barrel is easiest to read, and add or remove water to get there.

How many doses are in a 5 mg vial?

Divide 5 by your dose. At 250 mcg that is 20 doses, which at once daily is 20 days.

How many mcg are in a 5 mg vial?

5000 mcg. 1 mg is 1000 mcg. At 250 mcg per day a 5 mg vial is 20 doses.

Is BPC-157 approved for human use?

No. It is not an approved medicine in any major market and is sold for research use only.

BPC-157 dosage calculator

BPC-157 is dosed in micrograms out of a vial labelled in milligrams, which is where most of the confusion comes from. 1 mg is 1000 mcg.

IndependentThis site does not sell peptides and is not owned by a vendor. Every other calculator on page one of Google belongs to a shop.

The maths is openThe formula is written out on this page and the code behind it is a single file with an automated test suite.

How it earnsAffiliate links on one clearly marked page, and nowhere else. Never inside the calculator.

ReviewedDose ranges and half-life figures last checked 3 September 2026.

Dose to units, at the standard setup

Dose	Draw	U-100 units	Doses per vial	Vial lasts
100 mcg	0.04 mL	4 units	50	50 days
200 mcg	0.08 mL	8 units	25	25 days
250 mcg	0.1 mL	10 units	20	20 days
300 mcg	0.12 mL	12 units	16	16 days
400 mcg	0.16 mL	16 units	12	12 days
500 mcg	0.2 mL	20 units	10	10 days
750 mcg	0.3 mL	30 units	6	6 days
1000 mcg	0.4 mL	40 units	5	5 days

Based on a 5 mg vial reconstituted with 2 mL of bacteriostatic water, which is 2.5 mg/mL, drawn on a standard U-100 insulin syringe, once daily.

About the numbers above

BPC-157 is a synthetic pentadecapeptide. It is not approved for human use in any major market and is sold for laboratory research. Commonly reported protocols sit at 250 to 500 mcg per day, sometimes split into two doses, but that is a description of what people report rather than a recommendation.

The mg to mcg conversion is where errors happen. A 5 mg vial contains 5000 mcg. Reconstituted with 2 mL, that is 2500 mcg/mL, so a 250 mcg dose is 0.1 mL, or 10 units. Reading the vial as 5 mcg instead of 5 mg would be a thousand-fold error.

A 5 mg vial at different water volumes

If the draw feels awkward to read, change the water rather than the dose. The dose stays the same; only the mark moves.

Vial	BAC water	Concentration	Draw	U-100 units	Doses/vial
5 mg	1 mL	5 mg/mL	0.05 mL	5 units	20
5 mg	2 mL	2.5 mg/mL	0.1 mL	10 units	20
5 mg	3 mL	1.67 mg/mL	0.15 mL	15 units	20
10 mg	1 mL	10 mg/mL	0.025 mL	2.5 units	40
10 mg	2 mL	5 mg/mL	0.05 mL	5 units	40
10 mg	3 mL	3.33 mg/mL	0.075 mL	7.5 units	40

All rows above assume a 250 mcg dose and a standard U-100 insulin syringe, where 100 units = 1 mL.

How long it stays in you

Not well characterised in humans. Animal data suggests it clears quickly. This site only draws a decay curve where a half-life is actually documented in humans, so there is none here. Treat any precise figure you see elsewhere for BPC-157 with suspicion.

Common questions

How many units is 250 mcg of BPC-157?: It depends entirely on how much water you added. In a 5 mg vial reconstituted with 2 mL, the concentration is 2.5 mg/mL, so 250 mcg is 0.1 mL, which is 10 units on a U-100 insulin syringe. In the same vial with 1 mL of water it is 5 units, and with 3 mL it is 15 units.
How much bacteriostatic water for a 5 mg BPC-157 vial?: 2 mL is the usual choice. It gives 2.5 mg/mL, which puts the commonly reported range of 100 mcg to 1000 mcg between roughly 4 and 40 units. Aim for a draw between about 10 and 50 units, where the barrel is easiest to read, and add or remove water to get there.
How many doses are in a 5 mg vial?: Divide 5 by your dose. At 250 mcg that is 20 doses, which at once daily is 20 days.
How many mcg are in a 5 mg vial?: 5000 mcg. 1 mg is 1000 mcg. At 250 mcg per day a 5 mg vial is 20 doses.
Is BPC-157 approved for human use?: No. It is not an approved medicine in any major market and is sold for research use only.

Buying BPC-157? The where to buy page lists the vendors this site uses and what to check before ordering, and Peptide Bureau keeps the ranked vendor scorecard.

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Read this before you use the numbers. This is a unit-conversion tool. It converts a vial strength and a volume of bacteriostatic water into a concentration, a draw volume and a mark on an insulin syringe. It does not tell you what to take, whether to take it, or whether a compound is safe for you. Most of the compounds listed here are sold for laboratory research use and are not approved for human use. Nothing on this site is medical advice. Dosing decisions belong with a licensed clinician who knows your history. Always confirm the strength printed on your own vial rather than trusting a preset.