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Tirzepatide
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Dosing, made clear.
Compounded tirzepatide dosage chart: mg to units, for any vial
On a standard U-100 insulin syringe, units = your dose in mg ÷ your vial’s strength in mg/mL × 100. At 10 mg/mL, 2.5 mg is 25 units; at 20 mg/mL, it’s 12.5 units. Your prescription sets your dose. If anything doesn’t match, call or text NexLife before you inject.
- A chart for six doses and six vial strengths
- A converter for any dose and strength
- One number to call: (949) 818-8000, 24/7
Published by NexLifeLegitScript-certifiedUpdated October 13, 2026Medically reviewed by the NexLife clinical team, led by Adam Kennah, MD (NPI 1144260043)
Tirzepatide mg to units
25 units0.25 mL on a U-100 insulin syringe
For checking your math, not changing your dose. Compounded tirzepatide isn’t FDA-approved; your prescription sets your dose.
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Compounded medicines aren’t FDA-approved. A NexLife provider prescribes one only if it offers a significant difference for you compared with an FDA-approved medicine.
The chart
Tirzepatide mg to units, at the strengths you’ll see
Find your dose on the left and your vial’s strength across the top.
| Dose | 5 mg/mL | 10 mg/mL | 15 mg/mL | 20 mg/mL | 25 mg/mL | 30 mg/mL |
|---|---|---|---|---|---|---|
| 2.5 mg | 50 units | 25 units | 16.7 units | 12.5 units | 10 units | 8.3 units |
| 5 mg | 100 units | 50 units | 33.3 units | 25 units | 20 units | 16.7 units |
| 7.5 mg | Over 1 mL | 75 units | 50 units | 37.5 units | 30 units | 25 units |
| 10 mg | Over 1 mL | 100 units | 66.7 units | 50 units | 40 units | 33.3 units |
| 12.5 mg | Over 1 mL | Over 1 mL | 83.3 units | 62.5 units | 50 units | 41.7 units |
| 15 mg | Over 1 mL | Over 1 mL | 100 units | 75 units | 60 units | 50 units |
The formula behind every cell: units = dose in mg ÷ vial strength in mg/mL × 100. “Over 1 mL” means that dose doesn’t fit a standard 1 mL syringe at that strength.
Strength is on your label, in mg per mL. The same 50 units is 5 mg from a 10 mg/mL vial and 10 mg from a 20 mg/mL vial. If a new vial’s strength is different from your last one, recheck the math before your next dose.
The schedule
How tirzepatide doses usually step up
Doses go up gradually to help with side effects like nausea. This is the FDA-approved Zepbound schedule; your prescription comes first.
| Weeks | Weekly dose | What happens |
|---|---|---|
| 1 to 4 | 2.5 mg | Starting dose, to let your body adjust. Not meant as a long-term dose. |
| 5 to 8 | 5 mg | The first maintenance option |
| 9 to 12 | 7.5 mg | If your provider increases it |
| 13 to 16 | 10 mg | A maintenance option |
| 17 to 20 | 12.5 mg | If your provider increases it |
| 21 and on | 15 mg | The maximum dose |
Your provider may keep you on a dose longer, or not go higher at all, depending on how well it works for you and how you feel. Compounded tirzepatide follows your prescription, which your provider writes for you.
Vial math
How long does a vial last?
The 28-day limit
Once you put a needle in a vial, the FDA recommends using it within 28 days (or by the label’s date, if sooner), even if some is left. With weekly doses, that’s about four doses per vial.
A 30 mg vial, for example
At 7.5 mg a week, four doses use all 30 mg. At 5 mg a week, four doses use 20 mg, and the last 10 mg goes unused after day 28.
A new syringe every time
Use a new sterile needle and syringe for every dose. Reusing one can contaminate the vial.
Syringes
Reading an insulin syringe
| Syringe size | Holds | Each line usually equals |
|---|---|---|
| 0.3 mL | 30 units | 1 unit (some show half units) |
| 0.5 mL | 50 units | 1 unit |
| 1 mL | 100 units | 2 units |
Use the syringe your prescription comes with. If your dose is under 30 units, a 0.3 mL syringe makes small amounts easier to read.
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Both are prepared by state-licensed 503A partner pharmacies and shipped free. Your provider helps you decide which one fits.
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Semaglutide
Weekly GLP-1. Care, coaching and shipping included.
Get startedWhat’s inside every plan
- Tirzepatide: compounded, acts on two hormone pathways (GIP and GLP-1), taken once a week
- Semaglutide: compounded, acts on the GLP-1 pathway, taken once a week
- Prepared by state-licensed 503A partner pharmacies
- A licensed provider who reviews your history and follows your dose
- A personalized nutrition plan and a 1:1 coaching call
- Free expedited shipping; orders usually ship within 1 to 2 business days
- 24/7 support from real people, plus physician access during clinical hours
- HSA and FSA cards accepted, and Klarna or Afterpay at checkout
- Prefer no injections? Ask about the sublingual tablet, at its own flat price
Prescription required. Compounded medications are not FDA-approved, and a provider prescribes one only if it offers a significant difference for you compared with an FDA-approved medicine. On 12-month plans: $139 a month for tirzepatide, $119 for semaglutide, still the same at every dose. Prices checked October 7–13, 2026.
Your dose goes up.
Your price doesn’t.
No membership, no dose surcharges, no surprises. One flat, all-inclusive monthly price at every dose.
| Month one | Month two | Month three | Every month after | |
|---|---|---|---|---|
| Tirzepatide | $169 | $169 | $169 | $169 |
| Semaglutide | $139 | $139 | $139 | $139 |
Paying less somewhere else? Send us a receipt from another licensed U.S. telehealth provider and we’ll match your regular monthly price. See the terms
Month-to-month plan, all-inclusive. Longer plans cost less and stay flat. Tirzepatide is $159, $149 and $139 a month on 3-, 6- and 12-month plans. Semaglutide is $132, $125 and $119.
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Prices from each provider, checked October 7–13, 2026. Brand-name and compounded medications are different products; compounded medications are not FDA-approved. †Price Match Guarantee terms apply.
The NexLife Price Match Guarantee
Keep your price.
Upgrade your care.
Already on compounded tirzepatide or semaglutide? Bring your price to NexLife. If you pay less with another licensed U.S. telehealth provider, we match your regular monthly price for as long as your plan stays active.† You keep your price, and you gain a provider who follows your dose, a personal nutrition plan, a 1:1 coaching call and real people who answer 24/7.
- 1Send a receipt from the last 60 days
- 2A NexLife provider reviews your prescription
- 3Pay your matched price, at every dose
Locked while your plan is activeSame price at every doseNo membership fee
†NexLife Price Match Guarantee: for new members switching from a licensed U.S. telehealth provider with an active prescription for compounded tirzepatide or semaglutide. Send a receipt from the last 60 days and we match your regular all-in monthly price on the month-to-month plan, for the same medication (medication plus required fees; not first-month offers, sale prices, coupons or prepaid multi-month rates), for as long as your plan stays active. A NexLife provider must determine that treatment is right for you. Not open to people with Medicare, Medicaid or TRICARE coverage. Full terms.
Avoid these
The dosing mistakes the FDA warns about
- Mixing up mg, mL and units. Your dose is in mg; your syringe measures units; your vial strength links the two.
- Not rechecking a new vial. A different strength changes the units, even when the dose stays the same.
- Moving up faster than prescribed. The FDA has received reports of side effects from doses and dose increases beyond what the label allows.
- Using the wrong syringe. A 1 mL syringe’s lines usually mark 2 units, not 1.
Not sure? Ask before you inject.
Call or text NexLife at (949) 818-8000, 24/7. We check your prescription with your provider and the pharmacy, and get back to you before your next dose.
Tirzepatide dosing questions
How many units is 2.5 mg of tirzepatide?
It depends on your vial’s strength. At 10 mg/mL, 2.5 mg is 25 units; at 20 mg/mL, it’s 12.5 units; at 5 mg/mL, it’s 50 units. Units = mg ÷ mg/mL × 100.
How many units is 5 mg of tirzepatide?
At 10 mg/mL, 50 units. At 20 mg/mL, 25 units. At 25 mg/mL, 20 units.
How many units is 7.5 mg of tirzepatide?
At 10 mg/mL, 75 units. At 15 mg/mL, 50 units. At 20 mg/mL, 37.5 units.
How many units is 10 mg of tirzepatide?
At 10 mg/mL, 100 units, a full 1 mL syringe. At 20 mg/mL, 50 units. At 25 mg/mL, 40 units.
How long does a 30 mg vial of tirzepatide last?
No longer than 28 days after the first dose (or the label’s date, if sooner), per the FDA. At 7.5 mg a week that uses the whole vial; at lower doses, some will be left and should be discarded on day 28.
What is the starting dose of tirzepatide?
On the Zepbound label, 2.5 mg once a week for 4 weeks, then 5 mg, with 2.5 mg increases after at least 4 weeks on a dose, up to 15 mg. Your provider sets your schedule.
What if I miss a dose?
On the Zepbound label: take it within 4 days (96 hours) of the missed dose; if more time has passed, skip it and take the next one on schedule. Ask your provider what applies to your prescription.
Who do I call with a dosing question?
NexLife, always: call or text (949) 818-8000, 24/7. We check with your provider and the pharmacy and get back to you before your next dose.
Important safety information
Compounded tirzepatide and semaglutide are not FDA-approved, and the FDA hasn’t reviewed them for safety, effectiveness or quality. A provider prescribes them only when they offer a significant difference for you compared with an FDA-approved product. Both medicines may cause thyroid tumors, including cancer: don’t use either if you or a family member has had medullary thyroid carcinoma (MTC) or multiple endocrine neoplasia syndrome type 2 (MEN 2).
Read the full safety information
In studies with rodents, both medicines caused thyroid tumors; it isn’t known whether they cause them in people. Tell your provider if you notice a lump or swelling in your neck, hoarseness, trouble swallowing or shortness of breath.
Serious side effects can include inflammation of the pancreas (pancreatitis), gallbladder problems, low blood sugar (especially with insulin or sulfonylureas), kidney problems from dehydration, severe stomach problems, serious allergic reactions, vision changes in people with type 2 diabetes, and a faster heart rate. Tell your care team before any surgery or procedure that uses anesthesia or deep sedation. Don’t combine either medicine with other GLP-1 medicines.
Tirzepatide can make birth control pills less effective: switch to a non-oral method, or add a barrier method such as condoms, for 4 weeks after you start and for 4 weeks after each dose increase. Both medicines may harm an unborn baby. Semaglutide should be stopped at least 2 months before a planned pregnancy. Tell your provider right away if you’re pregnant, planning to be, or breastfeeding.
This is a summary, not the complete safety information. Read the full Prescribing Information for FDA-approved tirzepatide (Zepbound) and semaglutide (Wegovy), and talk with your provider. You can report side effects to the FDA at 1-800-FDA-1088 or fda.gov/medwatch.
Who checked this page
Adam Kennah, MDMedical Director, NexLife · Board-certified in emergency medicine · NPI 1144260043
Leads the NexLife clinical team, which medically reviewed this page on October 12, 2026.
NexLife editorial teamResearch and pricing
the Zepbound label and the FDA’s guidance on dosing errors with compounded GLP-1s (updated October 1, 2026)
- Every fact, sourced. Each price and rule links to the page it comes from.
- How we make money. NexLife is a telehealth provider. We earn revenue when people join NexLife.
- Corrections, fast. See something wrong or out of date? Email care@nexlife.us and we’ll fix it.
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Dosing questions, answered by people.
Start online in about 3 minutes. A licensed provider sets your dose, and our team is there 24/7.
- 1Tell us about you
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- 2A licensed provider reviews it
You’re prescribed only if treatment is right for you.
- 3We ship it, then stay with you
Our partner pharmacy usually ships within 1 to 2 business days. Free shipping, 24/7 support.
Sources
- Eli Lilly and Company. Zepbound (tirzepatide) prescribing information.
- U.S. Food and Drug Administration. FDA’s concerns with unapproved GLP-1 drugs used for weight loss.
- Centers for Disease Control and Prevention. Preventing unsafe injection practices (multi-dose vials).
- U.S. Pharmacopeia. USP General Chapter <797> Pharmaceutical Compounding: Sterile Preparations.
- NexLife. Compounded tirzepatide plans.
- Novo Nordisk. Wegovy (semaglutide) prescribing information.
- LegitScript. Certification lookup for nexlife.us.
- NexLife. Compounded semaglutide plans.