Peptide entry
Tirzepatide
Approved drugPeptide
Also known as: Mounjaro molecule, Zepbound molecule
Evidence / context
Evidence: Strong approved-drug evidence exists for the molecule; formulation and indication matter.
Available vial formats
Tirzepatide
- Conservative 2.5 mg once weekly (75 units per weekly injection)
- Standard 5-10 mg once weekly (150-300 units per weekly injection)
- Aggressive 12.5-15 mg once weekly (375-450 units per weekly injection; requires adequate total vial quantity) only if tolerated
- Cycle length 12-24+ weeks
- Best timing Same weekday each week, often evening.
- Concentration note at 10 mg / 3.0 mL (3.33 mg/mL) a 12.5-15 mg dose is 3.75-4.5 mL, which exceeds one U-100 syringe and a single 10 mg vial. To reach maintenance doses, reconstitute a larger total vial quantity at a higher concentration so the weekly draw fits, and split if still over 1 mL.
Titration schedule
- Weeks 1-4: 2.5 mg once weekly
- Weeks 5-8: 5 mg once weekly
- Weeks 9-12: 7.5 mg once weekly if needed and tolerated
- Weeks 13-16: 10 mg once weekly if needed and tolerated
- Weeks 17-20: 12.5 mg once weekly if needed and tolerated
- Week 21+: 15 mg once weekly maximum if needed and tolerated
- 2.5 mg is a starting dose, not usually the long-term maintenance target.
- Increase in 2.5 mg steps after at least 4 weeks on the current dose.
- Maintenance often lands at 5 mg, 10 mg, or 15 mg depending on response and tolerability.
- Hold the current dose longer if GI side effects or appetite suppression are too strong.
Reconstitution
- Swab vial tops with alcohol
- Draw 3.0 mL bacteriostatic water
- Inject slowly down vial wall (don't blast powder)
- Gently swirl - do not shake
- Rest 5-10 min to dissolve
- Refrigerate 2-8 C
Dosing, cycle & timing
- Conservative 2.5 mg once weekly (75 units per weekly injection)
- Standard 5-10 mg once weekly (150-300 units per weekly injection)
- Aggressive 12.5-15 mg once weekly (375-450 units per weekly injection; requires adequate total vial quantity) only if tolerated
- Cycle length 12-24+ weeks
- Best timing Same weekday each week, often evening.
- Concentration note at 10 mg / 3.0 mL (3.33 mg/mL) a 12.5-15 mg dose is 3.75-4.5 mL, which exceeds one U-100 syringe and a single 10 mg vial. To reach maintenance doses, reconstitute a larger total vial quantity at a higher concentration so the weekly draw fits, and split if still over 1 mL.
Support / expected effects
- Appetite suppression + improved glucose control.
- Often strong fat-loss response with adherence.
- Reduced cravings/food noise in many.
Side effects / tolerability
- Nausea.
- Constipation/diarrhea.
- Fatigue early.
Practical tips
- Smaller meals; avoid very fatty meals early.
- Hold dose longer if sides.
- Protein + lifting to preserve muscle.
Storage
Refrigerated: ~45-60 days.
Calculate the exact draw for TirzepatidePreloads your vial and water amount into the calculator.
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FAQ
What is Tirzepatide explored for?
Appetite suppression + improved glucose control. Often strong fat-loss response with adherence. Reduced cravings/food noise in many.
How is Tirzepatide reconstituted?
1) Swab vial tops with alcohol 2) Draw 3.0 mL bacteriostatic water 3) Inject slowly down vial wall (don't blast powder) 4) Gently swirl - do not shake 5) Rest 5-10 min to dissolve 6) Refrigerate 2-8 C
What is a typical cycle length for Tirzepatide?
12-24+ weeks
How are doses measured in syringe units here?
Units mean U-100 insulin-syringe gradations (1 mL = 100 units), not International Units. Use the calculator to convert a dose into the exact draw for your vial and water amount.
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