What is Mounjaro?
Mounjaro® (tirzepatide) is a prescription dual GIP/GLP-1 receptor agonist manufactured by Eli Lilly — the first medication in its class to target both the GIP and GLP-1 receptors simultaneously. It is FDA-approved for improving blood sugar control in adults with type 2 diabetes, used alongside diet and exercise.
Who uses Mounjaro?
- Adults with type 2 diabetes — As an adjunct to diet and exercise to improve glycemic control. Mounjaro is often prescribed when metformin alone is insufficient, or as part of a combination regimen.
- Patients who need significant A1C reduction — In the landmark SURPASS clinical trials, Mounjaro demonstrated superior A1C reduction compared to semaglutide (Ozempic) and other diabetes medications. The 15mg dose achieved average A1C reductions of up to 2.4%.
- Patients whose doctors want a dual-action approach — By activating both GIP and GLP-1 receptors, Mounjaro works through two complementary pathways to regulate blood sugar, slow gastric emptying, and reduce appetite.
Dosing
Mounjaro is administered as a once-weekly subcutaneous injection using a prefilled, single-dose pen. Available doses are 2.5 mg, 5 mg, 7.5 mg, 10 mg, 12.5 mg, and 15 mg. Treatment typically starts at 2.5 mg weekly for 4 weeks, then increases to 5 mg. Your doctor may gradually increase the dose based on your response and tolerability.
Mounjaro vs Zepbound — important distinction: Mounjaro and Zepbound contain the same active ingredient (tirzepatide) and are both made by Eli Lilly. The key difference: Mounjaro is FDA-approved for type 2 diabetes, while Zepbound is FDA-approved for chronic weight management in adults with obesity or overweight with at least one weight-related condition. They have separate savings programs, separate NDC codes, and are prescribed for different indications. If you are looking for tirzepatide specifically for weight loss and do not have type 2 diabetes, see our Zepbound savings guide.
What Does Mounjaro Cost Without Insurance?
"How much is Mounjaro per month?" It's the question everyone asks first — and the sticker shock is real. Without a savings program, you could be spending over $1,000 per month that you may not need to. Here's what the numbers look like without any assistance:
| Scenario | Estimated Cost |
|---|---|
| Monthly (4 prefilled pens, any dose) | $1,050 – $1,100 |
| Annual (no savings program) | $12,600 – $13,200 |
| With Mounjaro Savings Card | As low as $25/month |
| With Lilly Cares PAP (uninsured) | Free (income-based) |
Why is Mounjaro so expensive?
- First-in-class dual agonist: Mounjaro is the first FDA-approved medication that targets both GIP and GLP-1 receptors. The research, development, and manufacturing behind this novel mechanism involved years of clinical trials and significant investment.
- No generic or biosimilar available: As of 2026, no generic or biosimilar version of tirzepatide exists in the United States. Eli Lilly is the sole manufacturer, and there is no direct price competition for this molecule.
- High demand, limited competition: Demand for GLP-1 class medications has surged. While there are other GLP-1 drugs (like Ozempic, Wegovy, and Trulicity), Mounjaro's dual mechanism and clinical results have made it one of the most-prescribed diabetes medications — keeping prices elevated.
- Specialty or preferred tier placement: Insurance plans typically place Mounjaro on Tier 3, 4, or 5, meaning your copay or coinsurance can be substantial without assistance. Prior authorization is almost always required, which can delay access.
The good news: The majority of commercially insured patients who apply do qualify for the Mounjaro Savings Card — and can bring their monthly cost down to as little as $25. If you have no insurance, the Lilly Cares Foundation may cover the full cost. Not sure which path fits you? See our guide on copay cards vs patient assistance programs, or keep reading for the exact steps below.
To understand how copay cards work in general — and how they compare to GoodRx, patient assistance programs, and Medicare options — see our complete guide: How Pharma Copay Cards Work.
The Mounjaro Savings Card
Eli Lilly offers the Mounjaro Savings Card for eligible commercially insured patients, which can dramatically reduce your out-of-pocket cost for each fill.
What you can save
- Pay as little as $25 per month for your Mounjaro prescription.
- The savings apply each time you fill, for the duration of the program terms.
- Actual savings depend on your insurance plan's cost-sharing for Mounjaro (copay, coinsurance, or deductible amount).
Who qualifies?
- You must have commercial health insurance (employer-sponsored, individual marketplace, or similar private plan) that covers Mounjaro.
- Your insurance plan must cover Mounjaro — the savings card bridges your out-of-pocket cost, but is not a substitute for insurance coverage.
- You must be a U.S. resident and meet the program's terms and conditions.
- You must not be enrolled in Medicare, Medicaid, CHIP, TRICARE, or any other government-funded health program.
Important restriction: Federal law prohibits the use of manufacturer copay assistance cards with Medicare, Medicaid, or other government programs. Using the card while enrolled in a government plan is a federal healthcare violation. See the Medicare and uninsured options section below for legal alternatives.
Key program details
- The savings card applies to your out-of-pocket cost (copay, coinsurance, or deductible) as billed by the pharmacy — it does not affect what your insurance pays.
- Not valid if Mounjaro is not covered by your insurance plan. If your plan does not cover Mounjaro, you would need to pay the full retail price and the card cannot be applied to that.
- Available at most retail and specialty pharmacies — including CVS, Walgreens, Walmart, and specialty pharmacy channels. Confirm with your pharmacy before your first fill.
- Program terms, including the savings amount and duration, are set by Eli Lilly and may change. Always verify current terms at mounjaro.com/savings.
Worth knowing: Pharmacies rarely apply savings cards automatically — you need to provide the card number proactively at each fill and confirm it was processed before completing the transaction. If you don't present it, you'll pay the full copay.
Step-by-Step: How to Get the Mounjaro Savings Card
Follow these steps in order. Skipping ahead — especially past prior authorization — is the single most common reason patients end up paying full price when they didn't have to.
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Confirm you have commercial insurance — not Medicare or Medicaid
Check your insurance card. If it says Medicare, Medicaid, or any state/federal program, skip to the Medicare & Uninsured Options section below. The savings card only works with private commercial insurance.
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Get your Mounjaro prescription and prior authorization started
Ask your doctor to send a Mounjaro prescription to your pharmacy and to submit a prior authorization (PA) to your insurance. The PA typically requires documentation of a type 2 diabetes diagnosis, current A1C levels, and prior or current diabetes treatments. Without the PA, your insurance will likely deny coverage. This process often takes 1–3 weeks — delays are normal, not a sign something went wrong.
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Enroll in the Mounjaro Savings Card program
Visit mounjaro.com/savings or call 1-800-545-6962 (Eli Lilly). Have your insurance card handy. Complete the enrollment — you will need your name, date of birth, insurance information, and prescribing doctor's name. Your doctor's office can also enroll you on your behalf.
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Save your savings card details
After enrollment, Lilly will provide your savings card digitally (email or download) or by mail. Save the card number, BIN, PCN, and group number somewhere accessible — you will need them at every fill. You can also show the card on your phone at most pharmacies.
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Confirm PA approval before your first fill
Before going to the pharmacy, call your insurance or pharmacy to confirm that the prior authorization has been approved. Filling before PA approval often results in paying full price, and the savings card cannot help if there is no approved insurance claim to apply it to.
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Present the savings card at the pharmacy and verify your price
Every time you fill your prescription, provide your savings card number. Your charge should be $25 or as close as the program allows. Ask the pharmacist to confirm the card was applied before completing the transaction. If the total seems wrong, do not pay — ask them to rerun the card or call Lilly support directly at 1-800-545-6962.
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Check program terms and renew when required
Savings card programs have specific terms and durations. Set a calendar reminder to check your card status periodically and renew or re-enroll as needed. If your card expires and you fill without a valid card, you will be charged the full insurance out-of-pocket cost.
Ready to enroll? We'll email you a direct link to the official Mounjaro savings page, a step-by-step checklist, and a reminder so you never overpay.
Medicare, Medicaid & Uninsured: Your Options
If the Mounjaro Savings Card is not available to you, don't stop here. The alternatives below are real, tested pathways — and in some cases, they can save you even more than the savings card.
Quick reference — if you have Medicare:
① Skip the savings card (federal law prohibits it) → ② Look into the $2,000 Part D out-of-pocket cap + Extra Help → ③ Gather income documentation (tax return or SSA letter) → ④ Ask your doctor's office to help with the application → ⑤ Expect approval in 5–15 business days
Why the savings card does NOT work with Medicare
This is probably the most common question we get. The answer is straightforward but important: federal anti-kickback law (42 U.S.C. § 1320a-7b) makes it illegal for drug manufacturers to offer copay subsidies to patients enrolled in any government health program — including Medicare Part D, Medicaid, CHIP, TRICARE, and VA benefits.
This is not an Eli Lilly policy choice. Every manufacturer copay card for every drug has this same restriction. It exists because the government negotiates its own drug prices and does not allow manufacturers to influence patient behavior through copay subsidies. Using a savings card while on Medicare — even accidentally — is considered a federal healthcare violation.
What this means for you: If you turned 65 and switched to Medicare, or if you have dual coverage (Medicare + commercial), the savings card is off the table. But the alternatives below can be equally effective — especially the $2,000 annual out-of-pocket cap and the Lilly Cares Patient Assistance Program. For a full breakdown, see copay cards vs patient assistance programs and our Medicare vs. commercial insurance guide.
Medicare Part D patients: your action plan
- $2,000 annual out-of-pocket cap (Inflation Reduction Act): Since 2025, Medicare Part D caps your total drug out-of-pocket costs at $2,000 per year. For a drug like Mounjaro, this means you may hit the cap in the first few months — and pay $0 for the rest of the year. Ask your plan: "When will I reach my Part D out-of-pocket cap based on my current prescriptions?"
- Medicare Extra Help (Low Income Subsidy / LIS): If your income is below ~$22,590/year (single) or ~$30,660/year (married), this federal program can reduce your Part D premiums, deductibles, and copays to near-zero. Apply through Social Security (ssa.gov) or call 1-800-772-1213. Processing takes 2–4 weeks.
- Medicare Savings Programs (MSPs): State-run programs that help with Medicare premiums and cost-sharing. Your free State Health Insurance Assistance Program (SHIP) counselor can walk you through what you qualify for. Find yours at shiphelp.org.
- Switch Part D plans during open enrollment: GLP-1 medication coverage varies dramatically between Part D plans. During open enrollment (October 15 – December 7), compare plans at medicare.gov/plan-compare. Enter "tirzepatide" or "Mounjaro" and compare total annual cost — not just monthly premium. Patients who switch to a plan with better Mounjaro tier placement can save hundreds per year.
Uninsured or underinsured patients: your action plan
Lilly Cares Foundation Patient Assistance Program (PAP): Eli Lilly provides Mounjaro at no cost to qualifying uninsured patients through the Lilly Cares Foundation. Eligibility is income-based — typically up to 400% of the federal poverty level (~$62,400/year for a single person in 2026). This is not a discount — it is free medication.
How to apply for Lilly Cares (what actually happens)
The application involves more paperwork than the savings card, but many patients who meet the income requirements are approved — and the result is better: free medication, not just a discount.
- Download the application at lillycares.com or call 1-800-545-6962 and request one.
- Gather required documents: proof of income (most recent tax return, W-2, or Social Security benefit statement), proof of U.S. residency, and evidence that you are uninsured or underinsured (denial letter from insurer, or confirmation of no coverage).
- Your doctor completes their section of the application — including the prescription details and a medical justification statement. Most endocrinology and primary care offices are familiar with this process.
- Submit the application by fax, mail, or through the online portal. Lilly typically processes applications within 5–15 business days. If approved, medication is shipped to your doctor's office or directly to you.
- Renewal is required annually. Lilly Cares will send a renewal notice — but set your own reminder 60 days before expiration.
Not sure which savings path fits you? Enter your email and we'll send a personalized checklist based on your insurance type — plus a direct link to the right enrollment page.
Other resources
- NeedyMeds.org: A free, independent database of all manufacturer assistance programs. Search "tirzepatide" or "Mounjaro" at needymeds.org.
- Patient Advocate Foundation: Offers co-pay relief grants and case management for patients with chronic conditions. Apply at patientadvocate.org.
- HealthWell Foundation: Provides financial assistance grants for specific conditions including diabetes. Check current fund availability at healthwellfoundation.org.
- ACA Marketplace with subsidies: If you are uninsured and your income qualifies, ACA marketplace plans at healthcare.gov may cost less than you think with premium subsidies. A plan with Mounjaro coverage plus the savings card can reduce your total annual cost by thousands.
What to Do at the Pharmacy (If Something Goes Wrong)
Even when you've done everything right, things can still go sideways at the pharmacy. If your price is still high after using a savings option, it usually comes down to one of three issues: the savings card wasn't applied, a prior authorization is missing or pending, or your insurance denied coverage. Each one is fixable — here's exactly how.
If the price is still high ($100+ instead of $25)
This usually means the savings card was not applied to your transaction. Ask the pharmacist: "Can you reprocess this fill with my Mounjaro Savings Card?" Give them the card number, BIN, PCN, and group number directly. Most pharmacists can re-run the claim in minutes. If they say the card was already applied, ask them to read back the exact amount the card covered — sometimes the card processes but the benefit terms have changed.
If the savings card is rejected
The most common reason is a prior authorization issue on the insurance side, not a problem with the card itself. Ask the pharmacist: "Is my insurance showing an approved PA for this drug?" If the PA expired or was never approved, the savings card cannot process because there's no insurance claim to apply it to. Your next step is to call your doctor's office and ask them to resubmit the PA — and to call Lilly support at 1-800-545-6962 for help.
If Mounjaro is out of stock
Supply constraints have affected GLP-1 medications periodically. If your pharmacy is out of stock, ask them to check nearby locations or order it for you. You can also call other retail or specialty pharmacies in your area. Do not switch to a different dose or medication without consulting your doctor — dose availability varies, and substitutions require a new prescription.
If your insurance denies coverage entirely
Insurance denials are not unusual and often require follow-up. Many plans initially require step therapy (trying metformin or another drug first) or have specific criteria before covering Mounjaro. If your plan does not cover Mounjaro, the savings card cannot be used because there is no insurance claim to apply it to. But a denial is rarely the final word. Your options:
- Ask your doctor to submit a formulary exception request — a formal appeal asking your plan to cover Mounjaro despite formulary restrictions. Include a letter of medical necessity documenting your A1C, prior treatments, and clinical need.
- If denied on appeal, request an external review — an independent third party evaluates the decision. Most states require insurers to offer this option.
- Consider the Lilly Cares Patient Assistance Program (see Medicare & Uninsured Options above).
- During open enrollment, switch to an insurance plan that covers Mounjaro. Check formularies before switching.
If you already paid full price
Don't assume you're stuck. Call the pharmacy and ask: "Can you reverse and rebill my last Mounjaro fill with my savings card?" Most pharmacies can do this within 14 days of the original fill. If the pharmacy cannot reverse it, call Lilly directly — they sometimes offer retroactive assistance for eligible patients who had a valid card at the time of fill.
Common Mistakes (and How to Avoid Them)
Many patients assume the process will "just work" once they have a prescription. In reality, small missteps are the most common reason patients pay far more than they should — or give up on treatment entirely. Every mistake below is avoidable.
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Using Mounjaro off-label for weight loss without a diabetes diagnosis.
Mounjaro is FDA-approved for type 2 diabetes only. If you don't have a diabetes diagnosis, your insurance is very unlikely to cover Mounjaro — and the savings card won't apply to an uncovered drug. If you want tirzepatide for weight management, talk to your doctor about Zepbound, which is the same molecule approved for that purpose. -
Filling before the prior authorization is approved.
If you fill Mounjaro before your insurance approves the PA, you will almost certainly be charged the full cash price — over $1,000. Wait for written or verbal PA approval from your pharmacy or insurer before filling. -
Using the savings card with Medicare or Medicaid.
This is a federal compliance issue — it cannot be used, period. If you are on Medicare, see the Medicare options above. There are legitimate alternatives. -
Not presenting the savings card at the pharmacy.
Many patients are initially told they don't qualify when additional steps are still possible. Pharmacies do not automatically apply manufacturer savings cards. You must provide the card number, BIN, PCN, and group number at every fill and confirm it was applied before paying. -
Not appealing after an insurance denial.
PA denials are common on first submission — and many patients walk away, not realizing that a letter from their doctor often reverses the decision. You have the right to appeal, and appeals frequently succeed. Do not accept a denial as final before pursuing at least one appeal. -
Ignoring copay accumulator policies.
Some insurance plans use "copay accumulators" — meaning the money your savings card pays does not count toward your deductible or out-of-pocket maximum. You could use the card all year and still owe your full deductible. Call your insurer and ask: "Does my plan use a copay accumulator program?" Learn more in our copay accumulator explainer. -
Confusing Mounjaro with Zepbound at the pharmacy.
Both are tirzepatide by Lilly, but they have different NDC codes, different savings programs, and different approved uses. Make sure your prescription says "Mounjaro" and your savings card is for Mounjaro — not Zepbound — and vice versa. A mismatch will cause the card to be rejected.
Pro Tips to Maximize Your Savings
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Enroll in the savings card before your first fill — not after.
Enrollment is fast online at mounjaro.com/savings. Do it the same day your doctor sends the prescription, so the card is ready when the PA approves. There's no reason to wait. -
Ask your doctor for starter samples while your PA is processing.
Eli Lilly provides starter sample kits to prescribing physicians. While your PA is being reviewed (1–3 weeks), ask your doctor if they have Mounjaro samples — this keeps you on therapy for free during the waiting period. -
Call Lilly's support team for PA and insurance help.
Lilly offers support at 1-800-545-6962 that can help navigate prior authorization, insurance appeals, and enrollment questions. This is a free service that can save significant time and frustration. -
Compare pharmacies — prices and stock vary.
Mounjaro can be filled at CVS, Walgreens, Walmart, and specialty pharmacies. Pricing after insurance can vary by pharmacy, and stock levels fluctuate. If one pharmacy is out of stock or the price seems high, call another. Ask each pharmacy if they accept the Mounjaro Savings Card before your first fill. -
If your insurance plan changes, re-check everything.
Switching insurance plans (at open enrollment, or if your employer changes carriers) can invalidate your prior authorization and your savings card enrollment simultaneously. Before switching plans, confirm your new plan covers Mounjaro, that a new PA is submitted, and re-enroll in the savings program under your new insurance. For more cost-saving strategies, see our guide to reducing prescription costs. -
Keep your A1C and lab records updated with your doctor.
Insurance companies may require periodic re-authorization for Mounjaro. Having recent lab work (A1C, fasting glucose) on file makes PA renewals faster and reduces the risk of a coverage gap.
Mounjaro Savings: Frequently Asked Questions
Can I use the Mounjaro savings card with Medicare?
No. The Mounjaro Savings Card cannot be used by anyone enrolled in Medicare, Medicaid, CHIP, TRICARE, or any other federal or state government health program. This is not a policy choice by Eli Lilly — it is a requirement under federal anti-kickback law.
If you are on Medicare, your options include Medicare Part D Extra Help (Low Income Subsidy), Medicare Savings Programs, annual plan comparisons at medicare.gov, and the $2,000 annual out-of-pocket cap under the Inflation Reduction Act.
How much can I save with the Mounjaro savings card?
Eligible commercially insured patients may pay as little as $25 per month. Your actual savings depend on your plan's cost-sharing for Mounjaro, your deductible status, and current program terms set by Eli Lilly.
For most patients with commercial insurance that covers Mounjaro, significant savings are achievable. Verify current terms at mounjaro.com/savings.
What is the difference between Mounjaro and Zepbound?
Mounjaro and Zepbound contain the same active ingredient — tirzepatide — and are both made by Eli Lilly. The difference is the FDA-approved indication:
- Mounjaro — approved for type 2 diabetes (improving blood sugar control)
- Zepbound — approved for chronic weight management in adults with obesity (BMI ≥30) or overweight (BMI ≥27) with at least one weight-related condition
They have separate NDC codes, separate savings programs, and are prescribed differently. If you have type 2 diabetes, Mounjaro is the appropriate prescription. If you are seeking weight management without a diabetes diagnosis, Zepbound is the FDA-approved option.
What if I have no insurance and cannot afford Mounjaro?
Eli Lilly offers the Lilly Cares Foundation Patient Assistance Program for qualifying uninsured patients. Eligible patients may receive Mounjaro at no cost. Income limits typically extend up to 400% of the federal poverty level.
You can apply at lillycares.com or by calling 1-800-545-6962. Your doctor will need to sign off on the application. Additional resources include NeedyMeds.org and Patient Advocate Foundation.
Does Mounjaro require prior authorization from my insurance?
Yes — almost universally. Most insurance plans require prior authorization before covering Mounjaro. The PA process typically requires your doctor to document that:
- You have been diagnosed with type 2 diabetes.
- You have a documented A1C level and treatment history.
- Other treatments (like metformin) have been tried or considered.
The PA review process usually takes 1–3 weeks. If denied, you have the right to appeal. Lilly's support team can assist — call 1-800-545-6962.
Where do I fill my Mounjaro prescription?
Mounjaro can be filled at most retail pharmacies as well as specialty pharmacies. Common options include:
- CVS Pharmacy
- Walgreens
- Walmart Pharmacy
- Specialty pharmacies (your insurer may require or prefer one)
Before your first fill, confirm with the pharmacy that they (a) have Mounjaro in stock and (b) accept the Mounjaro Savings Card. Stock availability can vary, especially for specific dose strengths.
Is there a generic version of Mounjaro?
No. There is currently no generic or biosimilar version of Mounjaro (tirzepatide) available in the United States. Tirzepatide is only manufactured by Eli Lilly and is available as Mounjaro (for type 2 diabetes) and Zepbound (for weight management).
Alternatives in the GLP-1 class include Ozempic (semaglutide) and Trulicity (dulaglutide), which are different drugs that work through GLP-1 only (not dual GIP/GLP-1). For non-GLP-1 specialty drugs with similar savings programs, see our Repatha savings guide.
Can I use Mounjaro for weight loss if I don't have diabetes?
Mounjaro is FDA-approved only for type 2 diabetes. While many patients experience weight loss as a side effect, using Mounjaro off-label for weight management creates several practical problems:
- Your insurance is very unlikely to cover Mounjaro without a type 2 diabetes diagnosis.
- The Mounjaro Savings Card typically requires insurance coverage to apply — no coverage means no card benefit.
- You would be paying the full retail price (~$1,050/month) out of pocket.
If you want tirzepatide for weight management, the FDA-approved option is Zepbound, which is the same molecule with its own savings program designed for that indication.
What should I do if my insurance denies coverage for Mounjaro?
A denial is not the final answer. You have the right to appeal — and appeals often succeed with the right documentation. Here is the typical process:
- Step 1: Ask your doctor to submit a formal appeal with a letter of medical necessity. This should document your A1C levels, diabetes history, prior treatments tried, and why Mounjaro is clinically appropriate.
- Step 2: If the first-level appeal is denied, request an external review — an independent third party evaluates the decision.
- Step 3: Contact Lilly's support team at 1-800-545-6962 — they have staff who help with insurance appeals and know the documentation requirements.
If all else fails, consider the Lilly Cares Patient Assistance Program or switching to a plan that covers Mounjaro during open enrollment.
Related Resources
The process can feel overwhelming at first — especially with prior authorizations, savings cards, and insurance rules all in play. But most patients are able to find a path that significantly reduces their cost once they understand their options. The hardest part is knowing where to start, and you've already done that.
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