Mounjaro is one of the simpler GLP-1 drugs to price. Lilly sells it self-pay for $499 a month, and the figure doesn't change as your dose goes up [1]. What changes the number is insurance: commercial coverage plus Lilly's card can take it to $25, and Medicare Part D works differently again [2]. Here's every route, with the fine print.
Mounjaro's prices at a glance
| Route | Who it's for | Price per fill | Conditions |
|---|---|---|---|
| Savings card, plan covers Mounjaro | Commercial insurance | As little as $25 | Saves up to $150 a month and $1,950 a year; up to 13 fills; ends December 31, 2026 [2] |
| Savings card, plan doesn't cover it | Commercial insurance | As low as $499 | 1-month fill; saves up to $647 a month and $8,411 a year [2] |
| LillyDirect self-pay | Anyone with a prescription | $499 at every strength | Single-dose pen; taxes and fees may apply [1] |
| Medicare Part D | Part D enrollees with type 2 diabetes | Lilly: about 8 in 10 pay $0 to $50 | Depends on your plan's formulary and stage of coverage [2] |
| Medicare GLP-1 Bridge | Not available for Mounjaro | None | Covers Foundayo, Wegovy and Zepbound KwikPen only [4] |
Lilly's savings terms define a month as 28 days and up to 4 pens [2].
Without insurance: $499 a month at every dose
LillyDirect, Lilly's own self-pay pharmacy service, lists the Mounjaro single-dose pen at "Self-pay price: Starting at $499/month" for each strength: 2.5, 5, 7.5, 10, 12.5 and 15 mg [1]. The fine print adds that a prescription is required and that "additional taxes and fees may apply."
That flat price is good news if you'll end up on a higher dose. Your first month and your fifteenth cost the same, so a dose increase never changes the bill. It also means the starting dose isn't any cheaper, which is different from Zepbound's self-pay prices.
A year of Mounjaro is 13 fills, not 12
Lilly's savings terms define a month as 28 days and up to 4 pens [2]. Four weekly pens last four weeks, so a full year of weekly doses takes 13 fills. Budget for 13, not 12.
| Price per fill | Fills per year | Formula | Per year |
|---|---|---|---|
| $499 | 13 | 13 × $499 | $6,487 |
Our arithmetic from LillyDirect's listed price [1]. Taxes and fees not included.
In calendar months, that's about $541 a month on average ($6,487 ÷ 12). If you compare Mounjaro with a program that bills monthly, compare $541, not $499. The monthly cost calculator does this conversion for any price and billing cycle.
With commercial coverage, the card can bring a fill to $25
If your employer or private plan covers Mounjaro, Lilly's savings card can bring a 1-, 2- or 3-month fill of the single-dose pen to "as little as $25" [2]. The card has caps. It saves at most $150 on a 1-month fill ($300 on 2 months, $450 on 3) and $1,950 per calendar year, for up to 13 fills a year.
Those caps matter if your plan leaves you with a large copay. By our arithmetic, a $100 copay comes down to $25, but a $250 copay comes down only to $100, because the card stops at $150. The yearly cap works the same way: 13 fills at the full $150 would be $1,950, exactly the limit. Lilly's terms say the "card expires and savings end on 12/31/2026."
Commercial plan that doesn't cover it: the card still says $499
If you have commercial insurance but your plan doesn't cover Mounjaro, the card prices a 1-month fill "as low as $499" [2]. That matches the LillyDirect self-pay price. The card's caps on this route are higher, up to $647 a month and $8,411 a year. Either way, without coverage for Mounjaro, plan on $499 a fill.
Medicare: Part D often covers Mounjaro for type 2 diabetes
Mounjaro is a type 2 diabetes drug, and Lilly says it "is covered on many Medicare Part D plans for type 2 diabetes" [2]. Lilly's estimate of what people pay: "approximately 8 out of 10 patients will pay between $0-$50 for a 28-day supply of Mounjaro, with the remaining patients averaging about $262." Lilly bases that on IQVIA pharmacy data from October 2024 to September 2025. Your own price depends on your plan's formulary and where you are in the year's coverage stages.
Medicare's new GLP-1 Bridge, which charges a $50 copay for some weight-management drugs, doesn't include Mounjaro. Medicare's page lists Foundayo, Wegovy and the Zepbound KwikPen, and says people with type 2 diabetes aren't eligible for the Bridge, though "your Part D plan might cover your GLP-1s" [4]. The Bridge's copay rules are on CMS's page [5]. More on Medicare and GLP-1s for weight is in does Medicare cover Zepbound?
Medicaid coverage is set by each state's program, so ask your state Medicaid office or your prescriber's office. Remember that the savings card can't be combined with Medicaid.
Why Mounjaro costs more than Zepbound self-pay
Mounjaro and Zepbound contain the same drug, tirzepatide, at the same doses. Their self-pay prices differ. LillyDirect sells the Zepbound KwikPen for $299 at 2.5 mg, $399 at 5 mg and $449 at 7.5 to 15 mg when you refill within 45 days, or $499 to $699 if you don't [3]. Mounjaro is $499 at every dose [1].
The reason you can't just swap one for the other is the label. Mounjaro is approved for blood sugar control in type 2 diabetes, and to lower heart-attack and stroke risk in adults with type 2 diabetes at high risk [6]. Zepbound is the version approved for weight management and sleep apnea. Your prescriber writes for the one that fits your diagnosis. The full comparison is in Zepbound vs Mounjaro.
"$25 Mounjaro without insurance" doesn't exist
Searches for $25 Mounjaro without insurance run into the card's first condition: you must have commercial drug insurance that covers Mounjaro [2]. Without that coverage, the lowest Lilly price is $499. A site or seller promising $25 Mounjaro to someone without coverage isn't describing Lilly's program.
What a year costs on each route
Monthly prices hide how far apart these routes really are. Multiplying each by 13 fills shows the yearly gap, assuming a full year on treatment and the same price all year.
| Route | Per fill | Per year |
|---|---|---|
| Commercial coverage plus card, low copay | $25 | $325 |
| Medicare Part D, Lilly's typical range | $0 to $50 | $0 to $650 |
| LillyDirect self-pay | $499 | $6,487 |
Our arithmetic from Lilly's listed prices and estimates [1] [2]. Part D costs vary by plan and coverage stage; the card ends December 31, 2026.
The gap between the first and last rows is more than $6,000 a year. That's why it's worth an hour on the phone with your plan before you pay cash: ask whether Mounjaro is on the formulary, what tier it sits in, and whether it needs prior authorization.
Through a telehealth program, the price includes their terms
3 programs on this site list a monthly price for brand Mounjaro. Some match Lilly's $499; others charge well above it. Here's what each publishes on its own site:
| Program | Monthly price on its own site |
|---|---|
| Heally | $499/mo |
| Maximus | $1,349.99/mo |
| WePeptideRx | $1,354.17/mo |
Each program's own pages. Check whether the figure includes the medication, a membership, or both before you compare it with LillyDirect's $499.
Also offered by (no standing monthly price published): GoodLife Health, Wellorithm. If a program sends you to Lilly's price and charges its own membership on top, add the two and multiply by 13 for a year.
Compounded tirzepatide costs $85–$433 a month across programs on this site, but it isn't Mounjaro. It isn't FDA-approved, the FDA doesn't review it for safety or effectiveness, and it doesn't check its quality before it ships. Prices are in compounded tirzepatide cost; self-pay brand programs are scored on brand GLP-1 self-pay.
Before you pay, it helps to know what the drug involves: doses are in Mounjaro dosage, safety in is Mounjaro safe?, and how it compares with semaglutide in Ozempic vs Mounjaro.