Tirzepatide Dosing Guide:
Protocol, Reconstitution & Tracking

Complete evidence-based Tirzepatide dosing protocol for 2026. Updated reconstitution steps, injection guidance, and cycle protocols.

⚠️ Medical Disclaimer: This content is for informational purposes only and does not constitute medical advice. Always consult a licensed healthcare provider before starting any peptide or medication protocol.

⚡ Tirzepatide Quick Reference

Common dose: 2,500–15,000 mcg  |  Frequency: Once weekly
Half-life: ~5 days  |  Category: GLP-1 / Weight Loss
Injection sites: Subcutaneous — abdomen, thigh, or upper arm

⚡ Use Free Tirzepatide Calculator →

What is Tirzepatide?

Tirzepatide (Mounjaro/Zepbound) is the first dual GIP/GLP-1 receptor agonist, producing superior weight loss vs semaglutide — averaging 20–22% body weight reduction in the SURMOUNT trials. By activating both GIP and GLP-1 receptors, it enhances insulin sensitivity, reduces appetite via dual hypothalamic pathways, slows gastric emptying, and improves beta-cell function. FDA-approved for type 2 diabetes (Mounjaro) and weight management (Zepbound). Starting dose: 2.5 mg weekly, titrated every 4 weeks to 15 mg maximum. Track your tirzepatide titration schedule with the DoseIQ app.

Benefits of Tirzepatide

Dosing Protocols

Below are evidence-based Tirzepatide dosing protocols for different experience levels and goals. Always start at the lowest effective dose and assess tolerance before increasing.

Weeks 1–4: 2.5 mg (2,500 mcg) weekly.
Weeks 5–8: 5.0 mg weekly.
Full Titration: 7.5 mg → 10 mg → 12.5 mg → 15 mg max.

Reconstitution Guide

Proper reconstitution is critical for accurate dosing. Follow these steps carefully:

1
Add 2 mL BAC water to 10 mg vial = 5,000 mcg/mL
2
2.5 mg = 0.50 mL | 5 mg = 1.00 mL | 7.5 mg = 1.50 mL | 10 mg = 2.00 mL
3
Refrigerate; use within 28 days
4
Rotate injection sites weekly

Dosing Reference Table

Use this table to determine your exact injection volume based on vial size and BAC water amount:

Vial SizeBAC WaterConcentrationLow Dose VolHigh Dose Vol
10 mg2 mL5,000 mcg/mL0.50 mL1.00 mL
10 mg4 mL2,500 mcg/mL1.00 mL2.00 mL
15 mg3 mL5,000 mcg/mL0.50 mL1.00 mL

Injection Site Guide

Recommended sites: Subcutaneous — abdomen, thigh, or upper arm

Rotate injection sites to prevent scar tissue buildup. Clean the injection site with an alcohol swab before injecting. Use a 27-29 gauge insulin syringe for subcutaneous injections. Pinch the skin, insert needle at 45-90°, and inject slowly.

Storage Guidelines

Lyophilized (powder) form: Refrigerate at 36–46°F (2–8°C). Protect from light. Most peptides remain stable for 1–2 years unreconstituted.

Reconstituted solution: Refrigerate immediately after mixing. Use within 4 weeks typically. Do not freeze reconstituted peptides — this may damage the peptide structure.

Frequently Asked Questions

Q: Maximum dose?
A: 15 mg weekly for Mounjaro (T2DM) and Zepbound (weight management).
Q: How quickly does it work?
A: Appetite suppression 1–2 weeks; measurable weight loss by week 4; maximum effect at ~72 weeks.
Q: Side effects?
A: Nausea, diarrhea, constipation, vomiting — self-limiting with proper slow titration.
Q: Switching from semaglutide?
A: Stop semaglutide 1 week, then start tirzepatide at 2.5 mg weekly.
Q: Storage requirements?
A: Refrigerate reconstituted solution. Do not freeze. Use within 28 days of reconstitution.

Track Your Tirzepatide Protocol with DoseIQ

📱 Track Every Dose with DoseIQ

The #1 peptide tracking app for iPhone. Calculate doses, log injections, set reminders, and track your progress.

⬇️ Download Free on App Store

Related Guides

Semaglutide Guide →Retatrutide Guide →