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Reviewed by MyPeptideMatch Editorial TeamLast reviewed February 2026Updated February 2026

Tirzepatide Dosing Protocol: 10 mg Vial — Week-by-Week Titration & Supplies

Reconstitution guide, titration table, and supplies checklist for the 10 mg compounded tirzepatide vial.

Quickstart highlights

Tirzepatide is a dual GIP/GLP-1 receptor agonist (Eli Lilly LY3298176) that produced mean 20.9% body weight reduction at 15 mg weekly in the SURMOUNT-1 trial (NCT04184622, n=2,539).

  • Concentration: 5 mg/mL (10 mg vial + 2 mL bacteriostatic water).
  • At 5 mg/mL: 2.5 mg = 50 units, 5 mg = 100 units, 7.5 mg = 150 units, 10 mg = 200 units.
  • One 10 mg vial provides 4 doses at 2.5 mg, or 2 doses at 5 mg, or 1 dose at 10 mg.
  • SURMOUNT-1 trial: 10 mg dose achieved 19.5% mean body weight reduction at 72 weeks.
  • Refrigerate reconstituted solution; use within 28 days.

Dosing table

For educational reference only. Your prescribing provider may adjust doses based on your clinical profile and response.

WeekDose (µg)UnitsFrequencyNotes
1-4250050Once weeklyStarting dose — 10 mg vial provides 4 injections at 2.5 mg
5-85000100Once weekly5 mg dose — each vial provides 2 full injections
9-127500150Once weekly7.5 mg dose — 1.5 mL per injection from a fresh vial
13+10000200Once weekly10 mg maintenance — 2 mL per injection (full vial)

Gradual approach

WeekDose (µg)UnitsNotes
1-8250050Slow ramp — 2.5 mg x 8 weeks
9-1650001005 mg x 8 weeks before advancing

Reconstitution steps

  1. Draw 2 mL bacteriostatic water into a 3 mL syringe; inject slowly down the vial wall.
  2. Gently swirl until lyophilized powder is fully dissolved; do not shake.
  3. Final concentration: 5 mg/mL (10 mg / 2 mL). Label and date the vial.
  4. Refrigerate immediately at 2–8 °C; do not freeze.

Supplies needed

8-week plan

  • 1 vial
  • 8 syringes
  • 2 mL bac water
  • 8 alcohol swabs

12-week plan

  • 2 vials
  • 12 syringes
  • 4 mL bac water
  • 12 alcohol swabs

16-week plan

  • 2 vials
  • 16 syringes
  • 4 mL bac water
  • 16 alcohol swabs
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Protocol overview & cycle notes

Achieve sustained weight reduction using the full FDA-approved titration schedule, leveraging the 10 mg vial for efficient mid-to-high dose coverage in weeks 5–10 before advancing to higher dose vials if needed.

Cycle length: 16 weeks on.

Off-cycle: 8–12 weeks off; monitor weight and appetite during off-cycle.

Storage & handling

Lyophilized: store below 25 °C until use. Reconstituted: refrigerate at 2–8 °C; use within 28 days. Protect from light and do not freeze.

Injection & tracking tips

  • Rotate injection sites weekly: abdomen, outer thigh, upper arm.
  • The 10 mg vial at 5 mg/mL holds exactly 2 mL — a full vial equals one 10 mg maintenance dose.
  • Use a 100-unit U-100 insulin syringe; mark 50 units for 2.5 mg, 100 units for 5 mg, 150 units for 7.5 mg, 200 units for 10 mg.

Tracking

Logging helps you and your provider spot patterns and adjust dose or timing.

  • Record weekly body weight and waist circumference.
  • Log GI side effects (nausea, vomiting) severity 0–10 for the first 12 weeks.
  • Track energy levels and hunger scores to assess dose adequacy.
Log your cycle in the calculator →

How this works & references

Tirzepatide is a dual GIP/GLP-1 receptor agonist (Eli Lilly LY3298176) that produced mean 20.9% body weight reduction at 15 mg weekly in the SURMOUNT-1 trial (NCT04184622, n=2,539). The 10 mg dose produced 19.5% weight reduction. GIP receptor co-agonism enhances adipocyte cAMP signaling, thermogenesis, and may attenuate the nausea profile of pure GLP-1 agonism.

Frequently asked questions

How many vials do I need for a 16-week titration?
Approximately 2 vials: the first 10 mg vial covers weeks 1–4 (four 2.5 mg doses) and weeks 5–6 (two 5 mg doses). A second vial covers weeks 7–8 (two 5 mg doses) and weeks 9–10 (one 7.5 mg dose). Additional vials needed for weeks 11+.
Is the 10 mg vial more cost-effective than the 5 mg vial?
Yes, for doses above 5 mg weekly, the 10 mg vial (reconstituted to 5 mg/mL) provides the same concentration with fewer vials needed, reducing reconstitution frequency and cost per mg.
What should I do if I can't reach the 10 mg maintenance dose?
Maintain the highest tolerated dose for 4–8 additional weeks. In SURMOUNT-1, participants who reached 10 mg still achieved 19.5% weight loss — near the 20.9% seen at 15 mg — suggesting diminishing returns beyond 10 mg for many individuals.
Can tirzepatide cause low blood sugar?
In non-diabetic individuals, hypoglycemia risk is low. In type 2 diabetes patients on insulin or sulfonylureas, dose reduction of those agents is often necessary. Monitor fasting glucose weekly when initiating.
How do I store unused reconstituted solution between weekly doses?
Refrigerate at 2–8 °C between uses. The reconstituted vial remains stable for up to 28 days; do not freeze. Inspect for cloudiness before each use.

Related protocols

This content is for informational purposes only and does not constitute medical advice. Consult a licensed healthcare provider before starting any peptide therapy. Dosing and protocols may vary by formulation and prescriber.