How do I reconstitute peptides with bacteriostatic water?

Draw bacteriostatic water into a syringe, inject slowly down the vial wall (not directly onto powder), then gently swirl until dissolved. Never shake. Store refrigerated at 2-8C and use within 28 days.

How many units should I draw on an insulin syringe?

1 mL equals 100 units on a standard insulin syringe. Divide your required volume in mL by 0.01 to get units. For example, 0.25 mL = 25 units. Use the smallest syringe that fits your dose for better precision.

What syringe size should I use for peptide injections?

0.3 mL (30 unit) syringes offer the best precision for small doses under 0.3 mL. 0.5 mL (50 unit) syringes work for most peptides. 1 mL (100 unit) syringes are needed for larger dose volumes.

Dosing Tools

Peptide Reconstitution Calculator

Calculate peptide doses with our visual syringe guide

Tirzepatide Calculator

Calculate reconstitution doses for Tirzepatide

Tirzepatide profile Accumulation plotter

Vial Size (peptide amount)

BAC Water (added to vial)

Desired Dose

Syringe Size

Concentration 5.00 mg/mL

Doses per vial 4

1mL / 100 units

50 units

0.500 mL

How to use: Enter your vial size and the amount of bacteriostatic water you'll add. Then enter your desired dose to see exactly how much to draw.

Tip: 1 mL = 100 units on an insulin syringe. Draw slowly to ensure accuracy.

Tirzepatide Reference

Tirzepatide Dosing Protocols

Goal	Dose	Frequency
Weight loss initiation	2.5mg	Once weekly x 4 weeks
Weight loss progression	5mg	Once weekly
Weight loss optimization	7.5-10mg	Once weekly
Maximum weight loss	12.5-15mg	Once weekly
Diabetes management (mild)	5-7.5mg	Once weekly
Diabetes management (severe)	10-15mg	Once weekly

Reconstitution Steps

01 Allow vial to reach room temperature (15-20 minutes)
02 Clean vial tops with alcohol wipes, allow air drying
03 Calculate reconstitution volume
04 Draw bacteriostatic water carefully into syringe
05 Insert needle at 45-degree angle against glass wall
06 Inject water slowly down vial side to prevent foaming
07 Gently swirl—never shake vigorously
08 Allow 2-3 minutes for clearing if cloudiness appears
09 Final solution must be completely clear and colorless
10 Label with date and concentration
11 Store at 2-8°C, use within 28 days

Quick Reference

Typical Dose 2.5mg starting, titrate up to 5-15mg weekly

Frequency Once weekly (same day each week)

Half-life ~5 days (120 hours)

Storage Pen: 2-8°C before first use, room temp up to 21 days after. Compounded: 2-8°C

Cycle Ongoing therapy as prescribed

View full Tirzepatide profile

Research Purposes Only

These calculators are provided for educational and research purposes only. Always verify calculations and consult with qualified professionals. The information provided is not medical advice. Peptides should only be used in accordance with applicable laws and regulations.