Peptide Reconstitution & Dose Calculator
Eliminate the guesswork of syringe drawing. Enter your vial size, bacteriostatic (BAC) water volume, and desired dose to calculate the exact draw units instantly.
The most common cause of peptide dosing errors is incorrect manual reconstitution math. Miscalculating milligrams (mg) to micrograms (mcg) or dividing water ratios on U-100 insulin syringes can lead to under-dosing or dangerous over-dosing. Our widget eliminates all guesswork.
How Reconstitution Math Works
Reconstitution is the process of adding Bacteriostatic Water (BAC water) to a lyophilized (freeze-dried) peptide powder to form a sterile, injectable liquid solution. The calculation follows a simple formula:
Concentration (mg/mL) = Vial Size (mg) ÷ BAC Water Volume (mL)Draw Volume (mL) = Desired Dose (mg) ÷ Concentration (mg/mL)Syringe Units = Draw Volume (mL) × 100Example calculation: BPC-157 Dosing
| Calculation Setting | Standard Value |
|---|---|
| Peptide Vial Size | 5 mg |
| BAC Water Added | 2 mL |
| Resulting Solution Concentration | 2.5 mg / mL (2,500 mcg/mL) |
| Your Desired Single Dose | 0.25 mg (250 mcg) |
| Syringe Draw Level | 10 units (on a standard U-100 syringe) |
Why Proper Reconstitution is Vital
- Prevents Peptide Degradation: Lyophilized peptide powders are fragile. Spraying BAC water directly onto the powder can damage the peptide bonds and reduce active potency. Always trickle water down the side of the glass.
- Ensures Accurate Clinical Records: If you are titration-adjusting your protocols, having a precise, stable reconstitution concentration ensures that your historical records reflect your actual dose shifts.
- Facilitates Doctor Handoff: When sharing biometrics and dosing logs with your primary care provider, displaying precise unit-to-milligram conversions builds high trust and clinical safety.
Tired of manual math?
Track your compound stacks, model active half-life decay curves, map 3D injection site freshness, and get automated expiration alerts inside the native Dosi app.
Download Dosi App Free →Educational Use Only. This tool and its calculations are for informational and research purposes only and do not constitute professional medical advice, diagnosis, or treatment. Always follow your licensed healthcare provider's specific guidelines regarding peptide reconstitution and compound dosing.