BPC-157 dosage calculator
Enter your vial strength, the bacteriostatic water you are adding and the amount you want, and this returns the concentration, the volume and what that is in units on a U-100 insulin syringe. Arithmetic only. Nothing here says what amount is appropriate: the dose comes from the prescriber, and the figure the page opens with is an arbitrary placeholder, not a dose.
Calculator
The dose your prescriber set. The opening figure is an example for the arithmetic, not a dose.
Supplied as a lyophilised powder; a 5mg vial in 2ml is 2500 mcg/ml. The opening 100mcg is an arbitrary placeholder for the arithmetic, not a dose: the dose comes from the prescriber.
Draw to
4units
on a U-100 insulin syringe (0.04 ml)
- Concentration
- 2.5 mg/ml
- 2500 mcg/ml
- Volume to draw
- 0.04 ml
- Doses per vial
- 50
- Syringe capacity
- 30 units
How this is calculated
concentration (mg/ml) = vial mg / water ml = 5 / 2 = 2.5 concentration (mcg/ml) = concentration mg/ml x 1000 = 2500 volume to draw (ml) = dose mcg / concentration mcg = 100 / 2500 = 0.04 insulin units = volume ml x 100 = 0.04 x 100 = 4 doses per vial = floor(water ml / volume ml) = floor(2 / 0.04) = 50 100 units = 1 ml on every U-100 insulin syringe. Barrel size changes how much it holds, never what a unit means.
How BPC-157 is supplied
BPC-157 is sold as a lyophilised powder in sealed glass vials, most commonly at 5mg and 10mg, with 2mg vials appearing occasionally. The label states the mass of peptide in the vial and nothing about volume, because there is no liquid in it until you add some, which is the single fact that causes most of the confusion around these numbers. Two vials of the same strength can produce completely different figures on a syringe depending only on how much water went in.
Amounts are written in micrograms rather than milligrams, which is a second cause of arithmetic error: 1mg is 1000mcg, so a 5mg vial contains 5000mcg. The calculator above accepts either unit and converts, because a milligram figure entered where micrograms were meant is a thousandfold difference that a page like this should make hard to make.
The figure in the amount field when the page opens, 100mcg, is an arbitrary placeholder chosen so the arithmetic is easy to follow. It is not a dose and is not based on any amount people use. The dose comes from the prescriber: replace the placeholder with the amount on your prescription.
Reconstitution volumes and what they do to the numbers
1ml, 2ml and 3ml are the volumes most often used with a 5mg vial, and the choice is a trade-off rather than a correct answer. A 5mg vial in 1ml is 5000 mcg/ml, so every 100mcg occupies 2 units, which is readable but crowded into the first graduations of the barrel where a small misjudgement is proportionally large. The same vial in 3ml is 1667 mcg/ml and every 100mcg occupies 6 units, which is easier to draw accurately but uses three times the volume and needs a barrel that holds it.
The number to check before you settle on a volume is the units figure, not the milliliters: a volume that reads well on a 1ml barrel may not fit a 0.3ml one, and the calculator flags that rather than leaving you to find out at the syringe.
Storage and stability, in general terms
Sealed lyophilised vials are stable for a long period when kept cool, dry and out of light; that is the point of freeze-drying. Once reconstituted, the solution is far more fragile: it needs refrigeration, dislikes heat, light and agitation, and has a usable life measured in weeks rather than months. Bacteriostatic water, which contains benzyl alcohol, is what allows a vial to be entered more than once; plain sterile water does not, and behaves differently after the first entry.
The specific storage window for any given vial comes from whoever supplied it, and it varies with the peptide, the diluent and the conditions. A general figure from a calculator is not a substitute for that, and this page does not offer one.
About BPC-157
This calculator does arithmetic only. For what BPC-157 is, what the research shows, its side effects and its US status under the interim HHS policy, see our BPC-157 peptide page.
Frequently asked questions
How do I convert micrograms of BPC-157 into syringe units?
It depends entirely on the concentration. From a 5mg vial in 2ml (2500 mcg/ml), every 100mcg is 0.04ml, which is 4 units on a U-100 syringe. From the same vial in 1ml every 100mcg is 2 units, and in 3ml about 6. Scale that by the amount on your prescription, which comes from the prescriber; there is no fixed answer without the water volume.
How much bacteriostatic water for a 5mg BPC-157 vial?
1ml, 2ml and 3ml are all in common use, and the calculator shows what each does. More water lowers the concentration and moves your figure further up the barrel, which is easier to read; less water concentrates it into the first few graduations. The constraint is your syringe: the figure has to fit in the barrel you have.
Does a 10mg vial change the amount?
No. The amount is the quantity of peptide; vial strength and water volume together decide how many units it occupies. A 10mg vial in 2ml is twice the concentration of a 5mg vial in 2ml, so the same amount occupies half the volume — and the vial lasts twice as long.
Which syringe size suits BPC-157?
A 0.3ml insulin syringe holds 30 units and has the finest graduations, which suits small volumes. If your figure comes out above 30 units, a 0.5ml or 1ml barrel is needed, or a higher concentration. The units themselves do not change with barrel size — a unit is one hundredth of a milliliter on every U-100 syringe.
Is BPC-157 an approved medicine?
No. It is not approved by the FDA for the uses described online, and it is not a licensed medicine in the UK. This page performs arithmetic on figures you enter; it is not a statement that any of this is appropriate or lawful where you are.
Before you use this
This tool performs arithmetic only. It does not recommend a dose, a frequency, a duration or a supplier. Many peptides discussed online are not approved by the FDA for the uses people describe. Compounded medicines are supplied on prescription and should be prepared exactly as your pharmacy instructs. Talk to a prescriber or pharmacist before preparing or administering anything.