Peptide mixing and injection guides

Choose a compound and vial size to see the mixing math in plain language. The amount of water changes the concentration, so it also changes how far you draw the syringe. Each guide shows the calculation for the exact vial selected.

What matters first

Compounds covered: 26
Vial-size guides: 46
Injection guides: 2
Core calculation: Vial strength + water + target dose

Start with the calculator

Enter the vial strength, water volume and dose once, then open the guide for the vial you have.

Open the reconstitution calculator

Tirzepatide

How to inject Tirzepatide

Choose your vial strength for water options, concentration and syringe units.

5 mg vial 10 mg vial 15 mg vial 30 mg vial 60 mg vial

Semaglutide

How to inject Semaglutide

Choose your vial strength for water options, concentration and syringe units.

2 mg vial 5 mg vial 10 mg vial

Retatrutide

Choose your vial strength for water options, concentration and syringe units.

10 mg vial 20 mg vial 30 mg vial

Cagrilintide

Choose your vial strength for water options, concentration and syringe units.

5 mg vial 10 mg vial

Survodutide

Choose your vial strength for water options, concentration and syringe units.

5 mg vial 10 mg vial

BPC-157

Choose your vial strength for water options, concentration and syringe units.

5 mg vial 10 mg vial

Tesamorelin

Choose your vial strength for water options, concentration and syringe units.

PT-141

Choose your vial strength for water options, concentration and syringe units.

CJC-1295

Choose your vial strength for water options, concentration and syringe units.

Ipamorelin

Choose your vial strength for water options, concentration and syringe units.

Sermorelin

Choose your vial strength for water options, concentration and syringe units.

5 mg vial 6 mg vial 9 mg vial 15 mg vial

AOD-9604

Choose your vial strength for water options, concentration and syringe units.

NAD+

Choose your vial strength for water options, concentration and syringe units.

Epitalon

Choose your vial strength for water options, concentration and syringe units.

Kisspeptin-10

Choose your vial strength for water options, concentration and syringe units.

5 mg vial 10 mg vial

DSIP

Choose your vial strength for water options, concentration and syringe units.

5 mg vial 10 mg vial

Hexarelin

Choose your vial strength for water options, concentration and syringe units.

2 mg vial 5 mg vial

IGF-1 LR3

Choose your vial strength for water options, concentration and syringe units.

0.1 mg vial 1 mg vial

PEG-MGF

Choose your vial strength for water options, concentration and syringe units.

LL-37

Choose your vial strength for water options, concentration and syringe units.

Thymosin alpha-1

Choose your vial strength for water options, concentration and syringe units.

5 mg vial 10 mg vial

SS-31

Choose your vial strength for water options, concentration and syringe units.

Semax

Choose your vial strength for water options, concentration and syringe units.

10 mg vial 30 mg vial

Melanotan II

Choose your vial strength for water options, concentration and syringe units.

Mazdutide

Choose your vial strength for water options, concentration and syringe units.

Pinealon

Choose your vial strength for water options, concentration and syringe units.

What you need before you start

Two of the inputs above are not the drug. The water you mix with and the barrel you read the answer on are supplies, and each one has its own label worth reading.

Bacteriostatic water

What the added preservative does, and what the label allows.

Which syringe, and what one mark is worth

U-100 and U-50 marks are the same volume. U-40 is not.

All the supplies pages

Water, barrels, pen needles and sharps disposal.

Questions readers ask

How to reconstitute 30 mg of peptides?

Divide the 30 mg by the water you add — that is the strength of the mix. Add 3 mL and the vial makes 10 mg per mL. Add 1 mL and it makes 30 mg per mL.

The water never changes the dose, only how far up the barrel it reaches. Two 30 mg vials here show it, each at the amount its own table uses. Tirzepatide at 3 mL reads 25 units; retatrutide at 2 mL reads just over 13.

How much water do I mix with my peptides?

There is no single figure, and any guide handing you one is guessing at your vial. Each compound guide here lists its own volumes, and the guides work every one of them out.

What the choice settles is legibility. More water spreads the same milligrams further, so a dose covers more marks and gets easier to read. Less water shortens the draw and makes a small slip cost more.

How much water to reconstitute 10 mg of BPC 157?

With 1, 2 or 3 mL of water, a 250 microgram amount draws 2.5, 5 or 7.5 units. All three fit a U-100 syringe.

Only the 2 mL row lands on a syringe line. The other two stop the plunger halfway between lines, which is a large share of such a short draw. The 250 microgram amount is reported use, not a dose tested in a trial.

How to reconstitute 20 mg of peptide?

Divide 20 mg by the water: 1 mL makes 20 mg per mL, and 2 mL makes 10 mg per mL. Nothing about the milligrams in the vial moves.

Retatrutide is the 20 mg vial on this site. At the 2 mg its table uses, the stronger mix reads 10 units and the weaker one reads 20. Neither is more drug — one is just twice as long a pull.