Peptide blend calculator

For vials with two peptides in them. Enter both amounts from the label, then your dose of the first one. We'll show where to draw and how much of the second comes along.

Have you mixed your vial with water yet?

How much BPC-157 is in the vial?

It's printed on the vial label, for example BPC-157 5mg. This is the powder before any water goes in.

Where is it on the label?

The amount is the big figure on the label, in mg. Ignore the volume of water or the batch number.

And how much TB-500?

Blend vials list both amounts on the label. Enter the second one here.

What dose of BPC-157 were you told to take?

Use the number and unit exactly as you were given it. Doses under 1 mg are usually written in mcg (micrograms). 1 mg is 1,000 mcg.

How much water did you add?

Bacteriostatic water, in mL. If you're not sure, check what you wrote down when you mixed it.

Which syringe do you have?

Look at the biggest number printed on the side of the syringe.

Not sure? See the three sizes

All three are U-100 insulin syringes: 100 units is 1 mL. The top mark tells you which one you have. A 1 mL syringe has a line every 2 units, so count carefully.

Draw to

10 units

Pull the plunger back until the edge of the dark stopper nearest the needle lines up with 10. That's the line with 10 printed next to it.

Reading it back: 5 mg BPC-157 and 5 mg TB-500, mixed with 2 mL water, dose of 250 mcg. That's 0.1 mL, and the vial holds about 20 doses. Each dose also gives 250 mcg of TB-500.

Everything adds up. This fits your syringe and sits on a line you can read.

Show the maths

strength = 5 mg ÷ 2 mL = 2.5 mg/mL
volume = 0.25 mg ÷ 2.5 mg/mL = 0.1 mL
units = 0.1 mL × 100 = 10 units
TB-500 = 0.1 mL × 2.5 mg/mL = 0.25 mg

Every dose from this vial

5 mg in 2 mL on a 1 mL syringe, in 50 mcg steps. Your dose is whatever you were given; this only converts it.
Dose	Volume	Units	On the syringe
50 mcg	0.02 mL	2	on a line
100 mcg	0.04 mL	4	on a line
150 mcg	0.06 mL	6	on a line
200 mcg	0.08 mL	8	on a line
250 mcg	0.1 mL	10	on a line
300 mcg	0.12 mL	12	on a line
350 mcg	0.14 mL	14	on a line
400 mcg	0.16 mL	16	on a line
450 mcg	0.18 mL	18	on a line
500 mcg	0.2 mL	20	on a line
550 mcg	0.22 mL	22	on a line
600 mcg	0.24 mL	24	on a line
650 mcg	0.26 mL	26	on a line
700 mcg	0.28 mL	28	on a line
750 mcg	0.3 mL	30	on a line
800 mcg	0.32 mL	32	on a line
850 mcg	0.34 mL	34	on a line
900 mcg	0.36 mL	36	on a line
950 mcg	0.38 mL	38	on a line
1,000 mcg	0.4 mL	40	on a line

Printed from DoseClear. Reopen this exact answer:

Next time it opens with your numbers. Stays on this device.

This is a maths tool, not medical advice. If anything here doesn't match what you were told, check with your prescriber or pharmacist before you go ahead. Found an error?

In a blend, both peptides dissolve into the same water, so you can't draw one without the other. Work out the volume from the first peptide (its mg divided by the water gives its strength), then multiply that volume by the second peptide's strength to see how much of it each dose contains.

Every step is shown

Open "Show the maths" and you can check each line yourself, or show it to someone you trust.

We catch the common slips

Mixing up mg and mcg, or picking the wrong syringe, are the usual mistakes. We flag both before you draw.

Nothing to sell you

No shop, no seller links, no account. Your numbers stay on your device.

Why blends need their own calculator

A vial labelled with two amounts, such as 5 mg and 5 mg, holds 10 mg of powder in total. Dividing 10 mg by the water gives the wrong strength for either peptide on its own. This calculator keeps them apart: the units come from the first peptide, and the second is reported as what comes along with it.

Neither peptide in the default example is an FDA-approved medicine. In July 2026 an FDA advisory committee voted to recommend several peptides, including BPC-157 and TB-500, for the list compounding pharmacies may use; the FDA's final decision is still pending (AJMC, August 2026). Change the names in your head for any other blend; the maths is the same.

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