Compounded tirzepatide dosage chart, in units
On a U-100 syringe, units = dose in mg ÷ vial strength in mg/mL × 100. 2.5 mg of tirzepatide is 8.3 units at 30 mg/mL and 25 units at 10 mg/mL, so the strength on your own vial changes the number.
Your dose in units
25 units
0.25 mL on a U-100 insulin syringe, where 100 units are 1 mL.
This is arithmetic, not a dose to take. Your vial's label and your prescriber decide. Have your pharmacy or prescriber confirm the number before you inject.
Why the number matters: what FDA reports
- “In these instances, patients administered five to 20 times more than the intended dose of semaglutide.”
- “these patients were directed to administer 5 units from a vial. However, these patients mistakenly administered 50 units instead.”
- “One provider intended to dose 0.25 milligrams (5 units), but prescribed 25 units instead, leading to a patient receiving five times the intended dose and experiencing severe vomiting.”
- “The agency also encourages patients to talk with their health care provider or compounder about how to measure and administer the intended dose of compounded semaglutide or tirzepatide.”
FDA alert: dosing errors with compounded injectable semaglutide (FDA content current as of Jul 26, 2024) · FDA: concerns with unapproved GLP-1 drugs used for weight loss (current as of Oct 1, 2026). Read Nov 6, 2026.
Compounded tirzepatide dose chart
Units on a U-100 syringe, with mL beneath, at the doses in the Zepbound label. The strengths are examples: find the one printed on your vial, or use the calculator above. A 1 mL syringe holds 100 units, so a figure above 100 is more than one holds.
| Weekly dose | 10 mg/mL vial | 20 mg/mL vial | 30 mg/mL vial |
|---|---|---|---|
| 2.5 mg | 25 units0.25 mL | 12.5 units0.125 mL | 8.3 units0.083 mL |
| 5 mg | 50 units0.5 mL | 25 units0.25 mL | 16.7 units0.167 mL |
| 7.5 mg | 75 units0.75 mL | 37.5 units0.375 mL | 25 units0.25 mL |
| 10 mg | 100 units1 mL | 50 units0.5 mL | 33.3 units0.333 mL |
| 12.5 mg | 125 units1.25 mL | 62.5 units0.625 mL | 41.7 units0.417 mL |
| 15 mg | 150 units1.5 mL | 75 units0.75 mL | 50 units0.5 mL |
Doses: Zepbound prescribing information (DailyMed, September 2, 2026). Zepbound's label says the 2.5 mg dosage is for treatment initiation and is not approved as a maintenance dosage; the recommended maintenance dosage for weight reduction is 5 mg, 10 mg or 15 mg once weekly. Compounded tirzepatide is not FDA-approved and has no schedule of its own: follow what your prescriber wrote. “FDA is aware that compounders provide semaglutide in various concentrations.”
What compounded tirzepatide costs at these doses
Each seller's own advertised self-pay price, per 30 days, where it states the supply the price buys.
Lowest at the starting dose
- Affinity Direct
≈ $158 per 30 days, advertised as $147.90/28 days (affinitydirect.com), checked Nov 4, 2026
- Healthy Living Clinic
≈ $160 per 30 days, advertised as $149/4 weeks (healthyliving.clinic), checked Nov 1, 2026
- Fifty 410
≈ $213 per 30 days, advertised as $199/4 weeks (fifty410.com), checked Nov 4, 2026
- Gimme Care
≈ $213 per 30 days, advertised as $199/28 days (gimme.care), checked Nov 4, 2026
- Sprout Health
≈ $213 per 30 days, advertised as $199/28 days (joinsprouthealth.com), checked Nov 4, 2026
Lowest at the top dose (15 mg)
- Gimme Care
≈ $213 per 30 days at 15 mg, advertised as $199/28 days (gimme.care), checked Nov 4, 2026
- Big Easy Weight Loss
≈ $214 per 30 days at 15 mg, advertised as from $599/12 weeks (joinbigeasy.com), checked Nov 4, 2026
- Affinity Direct
≈ $245 per 30 days at 15 mg, advertised as $228.65/28 days (affinitydirect.com), checked Nov 4, 2026
- NiceRx
≈ $267 per 30 days at 15 mg, advertised as $249/28 days (nicerx.com), checked Nov 4, 2026
- REMEVi
≈ $288 per 30 days at 15 mg, advertised as $269/28 days (remevihealth.com), checked Nov 6, 2026
Compounded tirzepatide dosing: common questions
How do I convert compounded tirzepatide from mg to units?
Divide your dose in mg by your vial's strength in mg per mL, then multiply by 100. On a U-100 insulin syringe, 100 units are 1 mL. So 2.5 mg from a 10 mg/mL vial is 25 units. FDA has received reports of errors in exactly this step, so have your prescriber or pharmacy confirm the number.
How many units is 2.5 mg of tirzepatide?
It depends on the strength printed on your vial. At 10 mg/mL, 2.5 mg is 25 units (0.25 mL) on a U-100 syringe. At 20 mg/mL, 2.5 mg is 12.5 units (0.125 mL) on a U-100 syringe. At 30 mg/mL, 2.5 mg is 8.3 units (0.083 mL) on a U-100 syringe. Check your vial's label before you draw, and confirm with your prescriber or pharmacy.
How many units is 5 mg of tirzepatide?
It depends on the strength printed on your vial. At 10 mg/mL, 5 mg is 50 units (0.5 mL) on a U-100 syringe. At 20 mg/mL, 5 mg is 25 units (0.25 mL) on a U-100 syringe. At 30 mg/mL, 5 mg is 16.7 units (0.167 mL) on a U-100 syringe. Check your vial's label before you draw, and confirm with your prescriber or pharmacy.
How many units is 7.5 mg of tirzepatide?
It depends on the strength printed on your vial. At 10 mg/mL, 7.5 mg is 75 units (0.75 mL) on a U-100 syringe. At 20 mg/mL, 7.5 mg is 37.5 units (0.375 mL) on a U-100 syringe. At 30 mg/mL, 7.5 mg is 25 units (0.25 mL) on a U-100 syringe. Check your vial's label before you draw, and confirm with your prescriber or pharmacy.
How many units is 10 mg of tirzepatide?
It depends on the strength printed on your vial. At 10 mg/mL, 10 mg is 100 units (1 mL) on a U-100 syringe. At 20 mg/mL, 10 mg is 50 units (0.5 mL) on a U-100 syringe. At 30 mg/mL, 10 mg is 33.3 units (0.333 mL) on a U-100 syringe. Check your vial's label before you draw, and confirm with your prescriber or pharmacy.
How many units is 12.5 mg of tirzepatide?
It depends on the strength printed on your vial. At 10 mg/mL, 12.5 mg is 125 units (1.25 mL) on a U-100 syringe. At 20 mg/mL, 12.5 mg is 62.5 units (0.625 mL) on a U-100 syringe. At 30 mg/mL, 12.5 mg is 41.7 units (0.417 mL) on a U-100 syringe. Check your vial's label before you draw, and confirm with your prescriber or pharmacy.
How many units is 15 mg of tirzepatide?
It depends on the strength printed on your vial. At 10 mg/mL, 15 mg is 150 units (1.5 mL) on a U-100 syringe. At 20 mg/mL, 15 mg is 75 units (0.75 mL) on a U-100 syringe. At 30 mg/mL, 15 mg is 50 units (0.5 mL) on a U-100 syringe. Check your vial's label before you draw, and confirm with your prescriber or pharmacy.
What dose schedule does compounded tirzepatide follow?
Compounded tirzepatide is not FDA-approved and has no FDA-approved schedule of its own: follow what your prescriber wrote. The doses on this chart are the ones in the FDA-approved Zepbound label: Zepbound's label says the 2.5 mg dosage is for treatment initiation and is not approved as a maintenance dosage; the recommended maintenance dosage for weight reduction is 5 mg, 10 mg or 15 mg once weekly. FDA says: "the agency has received adverse event reports that may be related to patients prescribed compounded semaglutide or tirzepatide products in doses beyond what is in the FDA-approved drug label." Zepbound dosing, in the label's words
What happens if I draw the wrong number of units?
FDA reports patients taking far more than intended: "In these instances, patients administered five to 20 times more than the intended dose of semaglutide." and "these patients were directed to administer 5 units from a vial. However, these patients mistakenly administered 50 units instead." If you think you took too much, contact your prescriber or Poison Help at 1-800-222-1222.