Dual GIP / GLP-1 Protocol100% Client-Side
Updated 2026-10-26•Instant Calculation
Tirzepatide Reconstitution Calculator & Dosage Chart
A dedicated reconstitution calculator for Tirzepatide dual-agonist peptide vials (10 mg, 15 mg, and 30 mg). Computes exact volumetric dilution, BAC water ratios, and syringe unit tick marks for all standard weekly titration intervals.
Interactive Pre-Configured Simulator
Peptide Reconstitution & Syringe Calculator
U-100 / U-50 / U-30Educational & Laboratory Use Only: This computational model is designed exclusively for demonstrating chemical dilution formulas, mass-to-volume ratios, and syringe unit mathematics. It does not provide medical advice, diagnosis, treatment, or clinical dosing instructions. Statements and formulas have not been evaluated by the FDA. Consult a licensed physician for healthcare guidance.
Dose: 2.5 mgDraw to: 50 Units (0.500 mL)Conc: 5 mg/mL
Vial & Reconstitution InputsUSP <797>
mg
0100
mL
010
Draw to Line
50 Units
0.500 mL
Concentration
5 mg/mL
50 mcg / unit
Vial Capacity
4 Doses
2.5 mg each
Estimated Supply
~28 Days
Fresh (≤ 28d)
Syringe Visualization
100%
💡Pinch to zoom • Drag to pan • Double-tap to toggle
Volume: 0.500 mL | 50 Units | Concentration: 50 mcg/unit
Dosing & Titration Protocol
Tirzepatide 10mg (with 2.0 mL BAC Water) Titration Schedule
10 mg vial reconstituted with 2.0 mL bacteriostatic water produces a concentration of 5.0 mg/mL (50 mcg per U-100 unit).
| Schedule | Dose Target | Syringe Draw (U-100) | Injected Volume | Notes |
|---|---|---|---|---|
| Weeks 1–4 (Initiation) | 2.5 mg | 0.50 mL | 50 Units | Starting dose for receptor priming and side-effect mitigation. |
| Weeks 5–8 (Maintenance 1) | 5.0 mg | 1.00 mL | 100 Units | First therapeutic target (fills full 1.0 mL syringe). |
| Weeks 9–12 (Titration 2) | 7.5 mg | 0.75 mL (using 15mg/1.5mL) | 75 Units | Requires 15 mg or 30 mg vial for practical injection volume. |
| Weeks 13+ (Titration 3) | 10.0 mg | 1.00 mL (using 15mg/1.5mL) | 100 Units | High-efficacy metabolic protocol; requires larger vial size. |
Universal Reference MatrixInteractive Reconstitution Table
Instant Dilution & Syringe Units Matrix
Select any peptide vial size and BAC water volume to instantly view concentration stoichiometry and pre-calculated draw units for standard insulin syringes (U-100, U-50, U-30).
Total Powder
5,000 mcg
(5 mg)
Concentration
2.5 mg/mL
(2,500 mcg/mL)
Per 1 Syringe Unit
25 mcg / unit
(U-100, 0.01 mL)
Total Diluent
2 mL BAC
0.9% Benzyl Alcohol
| Target Dose | Volume (mL) | U-100 Units | U-50 Units (0.5mL) | U-30 Units (0.3mL) | Measurement Precision |
|---|---|---|---|---|---|
| 50 mcg | 0.020 mL | 2 Units | 2 | 2 | Small draw; U-30 recommended |
| 100 mcg | 0.040 mL | 4 Units | 4 | 4 | Small draw; U-30 recommended |
| 250 mcg | 0.100 mL | 10 Units | 10 | 10 | High precision |
| 500 mcg | 0.200 mL | 20 Units | 20 | 20 | High precision |
| 1.0 mg (1,000 mcg) | 0.400 mL | 40 Units | 40 | Exceeds 0.3mL | High precision |
| 2.0 mg (2,000 mcg) | 0.800 mL | 80 Units | Exceeds 0.5mL | Exceeds 0.3mL | High precision |
| 2.5 mg (2,500 mcg) | 1.000 mL | 100 Units | Exceeds 0.5mL | Exceeds 0.3mL | High precision |
| 5.0 mg (5,000 mcg) | 2.000 mL | 200 Units (>1.0mL) | Exceeds 0.5mL | Exceeds 0.3mL | Exceeds syringe capacity |
| 10.0 mg (10,000 mcg) | 4.000 mL | 400 Units (>1.0mL) | Exceeds 0.5mL | Exceeds 0.3mL | Exceeds syringe capacity |
Understanding "IU" (International Units) vs. "Syringe Units" (Volumetric Units)
A common point of confusion is searching for an "IU peptide calculator". On an insulin syringe, the tick marks indicate volumetric syringe units (where 100 units = exactly 1.0 mL, meaning 1 mark = 0.01 mL). These are not biological International Units (IU). Peptides (Semaglutide, Tirzepatide, BPC-157) are measured in metric mass (milligrams and micrograms), not IU. Use this matrix to convert your prescribed mass (mcg or mg) into exact volumetric syringe units.
Reconstitution Stoichiometry
Stoichiometric Principles & Meniscus Precision
- Dual Incretin Mechanism: Tirzepatide is a 39-amino acid peptide that activates both GIP and GLP-1 receptors.
- 10 mg Vial Ratio: 10 mg + 2.0 mL BAC water yields 5 mg/mL (50 mcg/unit). A 2.5 mg dose is 50 units.
- 15 mg Vial Ratio: 15 mg + 1.5 mL BAC water yields 10 mg/mL (100 mcg/unit). A 2.5 mg dose is only 25 units.
- 30 mg Vial Ratio: 30 mg + 3.0 mL BAC water yields 10 mg/mL (100 mcg/unit).
Reconstitution Pitfalls & Quality Control
Critical Errors to Avoid
Common Error: Using plain sterile water instead of 0.9% benzyl alcohol bacteriostatic water.
Best Practice: Sterile water contains zero antibacterial preservatives. In multidose vials punctured multiple times, bacterial contamination occurs within 24–48 hours. Always use Bacteriostatic Water containing 0.9% benzyl alcohol, which inhibits microbial proliferation for up to 28 days.
Common Error: Vigorously shaking the vial to dissolve clumps.
Best Practice: Peptides are delicate three-dimensional amino acid structures. Violent shaking creates high mechanical shear stress and air-water interfacial tension that breaks disulfide bonds and permanently denatures the active peptide. Gently roll the vial between your palms and allow it to dissolve at room temperature for 10 minutes.
Common Error: Spraying pressurized liquid directly onto the powder cake.
Best Practice: Blasting water directly onto lyophilized peptide can fracture fragile peptide sequences. Always angle your syringe needle against the inside glass wall of the vial so the diluent cascades smoothly down into the cake.
Frequently Asked Questions
Tirzepatide Reconstitution Calculator Questions Answered
How many units is 2.5 mg of Tirzepatide on a U-100 syringe?
If you added 2.0 mL of bacteriostatic water to a 10 mg vial, 2.5 mg is exactly 50 units (0.50 mL). If you added 1.5 mL of BAC water to a 15 mg vial, 2.5 mg is exactly 25 units (0.25 mL).
How much BAC water do you put in a 10mg Tirzepatide vial?
The standard recommendation is 2.0 mL of bacteriostatic water. This provides a concentration of 5 mg/mL, making the 2.5 mg starter dose exactly 50 units.
How do you reconstitute a 30mg Tirzepatide vial?
For a 30 mg vial, add 3.0 mL of bacteriostatic water. This yields a 10 mg/mL solution (100 mcg per unit), allowing a 2.5 mg dose to be drawn at 25 units and a 5.0 mg dose at 50 units.
Insulin Syringe Calibration
U-100 Syringe1 unit = 0.01 mL
U-50 Syringe0.5 mL capacity
U-30 Syringe0.3 mL (high precision)
Storage Temp36°F to 46°F (Refrigerated)
Puncture Beyond-Use28 Days (USP <797>)
Research & Compounding Notice
Sterile Compounding, Regulatory & Research Disclaimer
Not Evaluated by the FDA: This tool, its calculations, and related informational content have not been evaluated by the U.S. FDA or any regulatory authority. Not intended to diagnose, treat, mitigate, cure, or prevent any medical condition or disease.
Educational Stoichiometry & Research Only: Provided strictly for academic reference, laboratory dilution mathematics, and volumetric stoichiometry. Not a prescription or instruction for human self-administration.
Sterile Compounding Technique: Always use sterile, single-use insulin syringes and 70% isopropyl alcohol wipes. Never reuse needles or contaminate multidose vials.
Zero Tolerance for Freezing: Never freeze reconstituted peptide solutions. Ice crystal shearing destroys fragile amino acid secondary and tertiary structures.
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