Peptide Planner

Reconstitution calculator, dosing schedule & stocks builder
⚠ Research use only — not for human administration.
FOR RESEARCH PURPOSES ONLY. This calculator is provided strictly for in-vitro research, educational, and informational use. It is not intended for human administration, diagnosis, or treatment of any disease. Peptides referenced herein (Retatrutide, Tirzepatide) may be investigational or prescription-only substances in your jurisdiction. Always consult a licensed clinician before handling or administering any compound. The authors and operators of this tool assume no liability for any harm, loss, or legal consequences arising from use or misuse of the calculations provided. By using this tool you acknowledge that you are conducting independent research and accept full responsibility for your actions.
Vial & Reconstitution

Tell us your vial size and how much bacteriostatic water you'll add. We'll compute the resulting concentration and your draw volume for the selected syringe.

mg
mL
mg
Reconstitution needle — 25G to 27G Use a larger mixing needle (25–27 gauge) to draw BAC water and reconstitute the lyophilized powder. Aim the stream against the vial wall, not directly at the powder.
Dosing syringe — 31G insulin For subcutaneous injection, a 31-gauge insulin syringe minimizes discomfort. U-100 (100 units = 1 mL) is the standard for the dose calculations on this page.
Units to draw (U-100, 1 mL syringe)
—units
on an insulin syringe
Volume
—mL
to draw from vial
Dose
—mg
delivered per injection
Concentration
—mg/mL
in reconstituted vial
U-100 INSULIN SYRINGE (1.0 mL / 100 UNITS) — RECOMMENDED DRAW
How the math works. Concentration = vial size ÷ water volume. Draw volume = dose ÷ concentration. Insulin syringes use 100 units per 1 mL, so units = volume × 100. The standard reconstitution ratio is roughly 1 mL BAC water per 10 mg peptide (yields 10 mg/mL). Always verify with a second source before use.
Plan Configuration

Build a titration schedule. Pick a clinical preset or fully customize your escalation. The table and timeline update live.

mg
mg
weeks
mg
steps
Your Dosing Schedule

— week plan starting —

Week Date range Dose Per injection Frequency Notes
Educational use only. This planner is not medical advice. Peptide dosing should be supervised by a qualified clinician. Always start low, titrate slowly, and stop if you experience adverse effects.
Stocks Configuration

Plan how many vials you'll need across your dosing schedule. Reconstituted peptide typically degrades ~30 days after mixing, so the planner groups doses into 4-week months and shows how much BAC water and peptide is wasted each month.

mL / 10 mg
days
Stocks Summary

— across — months

Month Dose needed Concentration Volume needed Vials used BAC water used BAC water wasted Peptide wasted
Why does waste happen? Once reconstituted, peptide solution degrades over time (typically ~30 days refrigerated). If a month's dose is smaller than the vial size, the leftover solution must be discarded. The "BAC water wasted" column shows the volume of reconstituted solution discarded; "Peptide wasted" shows the corresponding mg of peptide lost.