No brand. No sales. Research-linked dosing

Just want the basic math without the research? Use the Simple Calculator →

Read first: This is an educational harm-reduction tool for people who have already decided to use research peptides. It exists to help you reconstitute and dose accurately so you don't mis-measure. Nothing here is medical advice or a recommendation to use any substance.
The one rule: when in doubt, take less. The lowest dose that works is the safest dose. Clinical trials push doses high and fast — that's how studies hit big numbers, and it's also why people feel awful. You almost never need the top of the range. It is always safer to under-dose than to over-dose.

👀 First — identify what you have

Before you calculate, make sure you know what's in the bottle in your hand. Bottle sizes vary, and a blend is dosed differently than a single peptide.

1 Choose your peptide

Pick what you're taking. We'll pull the research, set a safe starting dose, and work out your exact reconstitution recipe for an easy draw.

Select a peptide above to see clinical trials, research, a recommended starting dose, and your reconstitution worked out automatically.

2 Reconstitute

Mixing the powder with water is the step people get wrong. Here's your exact recipe — the water amount is set for you. See full technique →

Check the label and enter what you actually have. Change this and the water re-calculates automatically.
Which bottle do you have? Compare it to a penny — manufacturers rarely print the mL size.
💧 Your reconstitution recipe
Add 2 mL bacteriostatic water
to your 5 mg vial
→ makes 2.5 mg/mL · each dose draws to 10 units
💉 Drawing the water into your vial
How long is reconstituted peptide good for?
Once you add bacteriostatic water, store the vial in the refrigerator (36–46 °F / 2–8 °C). Bacteriostatic water contains 0.9% benzyl alcohol, which holds back bacterial growth for roughly 28 days — discard after about a month. Don't freeze reconstituted peptide, keep it out of light, and wipe the stopper with an alcohol swab before every draw. Sterile/plain water has no preservative and should be used within a day or two. If a solution looks cloudy, has floaties, or changed color, throw it out.
📋 Full safety, sterility & sourcing guide →

3 Draw

Pull the plunger back to this line on your insulin syringe.

Your dose from slider
Set by the dose slider in Step 1.
Draw syringe to
25 units
Volume
0.25 mL
Concentration
2.5 mg/mL
Doses per vial
20
Per-unit dose
10 mcg/u
U-100 insulin syringes: 100 units = 1 mL. A "10-unit draw" = 0.1 mL. Which syringe & needle? →
Pull the plunger back to the highlighted line — the needle end fills first
⚠️ This dose needs mL, more than your mL syringe holds. Use a larger syringe or split the dose.
⚠️ This draw is small ( units) and harder to measure precisely.
ℹ️ mL is more than a standard 3 mL vial holds. Use a bigger vial or add less water.
⚠️ Your dose () is more than the mg of peptide in the whole vial — you can't draw a single dose from it. Check your vial strength.
📲 Save to your phone:

4 Protocol & supply planner

These come from the peptide's typical protocol — a result, not something you have to set. Tick “customize” to change them.

Pick a peptide in Step 1 to see your schedule and supply worked out.
Vial lasts
20 days
Weekly amount
1.75 mg
Total this cycle
7 mg
Vials per cycle
2
Injections / cycle
28
BAC water / cycle
4 mL