How much does Mounjaro cost? Pricing, insurance and savings
Everything you need to know before filling your prescription: list price, what insurance covers, savings card options and how long each pen lasts. Prices are approximate — always confirm with your pharmacy and insurance provider.
Mounjaro list price (without insurance)
Mounjaro (tirzepatide) is a prescription medication manufactured by Eli Lilly. The list price (what you'd pay without any insurance or savings card) is the same for all dose strengths:
| Dose | Pens/box | List price | Cost/month |
|---|---|---|---|
| 2.5 mg | 4 pens (4 weeks) | ~$1,023 | ~$1,023 |
| 5 mg | 4 pens (4 weeks) | ~$1,023 | ~$1,023 |
| 7.5 mg | 4 pens (4 weeks) | ~$1,023 | ~$1,023 |
| 10 mg | 4 pens (4 weeks) | ~$1,023 | ~$1,023 |
| 12.5 / 15 mg | 4 pens (4 weeks) | ~$1,023 | ~$1,023 |
List prices may vary by pharmacy and are subject to change. Check your pharmacy for the current cash price. GoodRx and similar tools can sometimes offer lower cash prices.
Each box contains 4 single-use prefilled pens, one per week. One box = one month of treatment.
Do you need a prescription?
Yes, always. Mounjaro is a prescription medication in the United States. Your pharmacy cannot dispense it without a valid prescription from a licensed healthcare provider.
Who can prescribe it:
- Primary care physicians — most Mounjaro prescriptions come from PCPs.
- Endocrinologists — especially for diabetes-related prescriptions.
- Obesity medicine specialists — for weight management prescriptions.
- Telehealth providers — many online clinics now prescribe GLP-1 medications after a virtual visit.
Does insurance cover Mounjaro?
This is the question everyone asks, and the answer depends on your insurance plan and the reason for the prescription:
- For type 2 diabetes: most commercial insurance plans cover Mounjaro for T2D. Your copay will depend on your plan's formulary and tier placement — typically $25–$150/month with commercial insurance.
- For weight loss: coverage varies significantly. Mounjaro is FDA-approved for T2D, not for weight loss. For obesity, the same molecule (tirzepatide) is marketed as Zepbound. Some plans cover Zepbound for weight management, but many still don't. Check your plan's formulary or call your insurer.
- Medicare Part D: may cover Mounjaro for diabetes. Coverage for weight loss medications is generally limited under Medicare.
- Medicaid: coverage varies by state. Some state Medicaid programs cover GLP-1 medications for diabetes.
Without insurance, the annual cost at list price is roughly $12,276. That's why savings programs matter.
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How to lower your Mounjaro cost
There are several ways to pay less than the list price:
1. Lilly Mounjaro Savings Card
Eli Lilly offers a savings card for commercially insured patients. Eligible patients may pay as little as $25/month. Key details:
- Available to patients with commercial insurance (not Medicare, Medicaid or other government plans).
- Must have a valid prescription.
- Terms and eligibility may change — check Lilly's official website for the latest offer.
2. Insurance prior authorization
If your insurer initially denies coverage, your doctor can file a prior authorization request. Many denials are overturned with supporting medical documentation. Ask your doctor's office to help.
3. Pharmacy discount tools
Sites like GoodRx, RxSaver and SingleCare can offer lower cash prices at certain pharmacies. The discount can be significant, though it still won't match insurance pricing.
4. Manufacturer patient assistance
Lilly Solutions may help uninsured or underinsured patients access Mounjaro at a reduced cost or for free. Eligibility is based on income and insurance status.
How long does each pen last?
Each Mounjaro pen is single-use. It contains one weekly dose and cannot be refilled or reused.
- 1 pen = 1 weekly injection
- 1 box (4 pens) = 4 weeks = 1 month of treatment
- Unused pens should be stored in the refrigerator (36–46 °F / 2–8 °C). Once removed, they can stay at room temperature (up to 86 °F / 30 °C) for up to 21 days.
- After use, dispose of the pen in an FDA-cleared sharps container (not your regular trash).
What dose do you start on?
The standard Mounjaro protocol always starts with the lowest dose:
- 2.5 mg for 4 weeks — an adjustment dose. The goal is not weight loss but letting your body adapt to the medication.
- 5 mg for at least 4 weeks — the first dose with meaningful therapeutic effect.
- From there, your doctor may increase to 7.5 mg, 10 mg, 12.5 mg or 15 mg in increments of at least 4 weeks, based on your response and tolerance.
Never adjust your dose on your own. The titration schedule exists for safety and tolerability reasons. Your healthcare provider decides when to increase.
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Mounjaro vs. Zepbound: what's the difference?
Both Mounjaro and Zepbound contain the same active ingredient — tirzepatide, made by Eli Lilly. The difference is in the FDA-approved indication:
- Mounjaro: FDA-approved for type 2 diabetes.
- Zepbound: FDA-approved for chronic weight management in adults with obesity (BMI ≥ 30) or overweight (BMI ≥ 27) with at least one weight-related condition.
If your doctor is prescribing tirzepatide for weight loss, the prescription may be written for Zepbound rather than Mounjaro. Insurance coverage can differ between the two brand names, so check with your plan.
How do other GLP-1 medications compare?
For context, here are approximate US list prices for other GLP-1 treatments (without insurance):
- Ozempic (semaglutide 0.25–1 mg): ~$935/month. FDA-approved for T2D.
- Wegovy (semaglutide 2.4 mg): ~$1,349/month. FDA-approved for weight management.
- Zepbound (tirzepatide): ~$1,023/month. FDA-approved for weight management.
- Saxenda (liraglutide): ~$1,430/month. Daily injection, FDA-approved for weight management.
Actual out-of-pocket cost depends heavily on your insurance, savings cards and pharmacy choice.
Frequently asked questions
Can I buy Mounjaro online?
Only through legitimate pharmacies. You must have a valid prescription. Be very cautious of websites selling GLP-1 medications without requiring a prescription — the product may be counterfeit, improperly stored or unsafe. Use only licensed US pharmacies or verified mail-order pharmacies.
Can I use a prescription from another country?
Generally, no. US pharmacies require a prescription from a US-licensed healthcare provider. If you're moving to the US, you'll need to see a local provider to continue your treatment.
What if I can't afford it?
Talk to your doctor. They can help you explore options: the Lilly savings card, patient assistance programs, alternative medications that may be covered by your insurance, or adjusting your treatment plan. Don't stop treatment without medical guidance.
Track your treatment without paying more.
Andre is free. Dose tracking, weight charts, symptom diary, injection site map and reminders — everything you need to make every pen count. Your data stays on your phone.
Download Andre freeRelated guides
- How to use your GLP-1 pen correctly — steps, injection sites and common mistakes.
- Your first weeks on GLP-1 — what to expect when starting treatment.
- Serious GLP-1 side effects — pancreatitis, gallbladder and warning signs.
Sources: FDA — Prescribing Information, Mounjaro (tirzepatide); FDA — Prescribing Information, Zepbound (tirzepatide); Eli Lilly — Mounjaro Savings Card Terms; Centers for Medicare & Medicaid Services — Part D Formulary Guidance; GoodRx — Mounjaro Price Guide. Prices checked October 2026.