The cheapest tirzepatide month depends on three things: the dose, the term and the fees. The medication price comes first. Then each of the three can move it.
The lowest published month
$83
Lowest published compounded month
$249
Typical compounded month (361 sellers)
$399
Zepbound 5 mg vial, self-pay month
Source: LillyDirect
Each seller counts once, at its lowest monthly price. Prices were read through September 2026.
332 of 361 compounded sellers list a month under $399. That is the maker’s price for its lowest maintenance dose[2].
Every seller’s price is on the tirzepatide price board. The board sorts by the medication price alone.
Check the dose behind the low price
The label starts everyone at 2.5 mg a week for 4 weeks[1]. It says 2.5 mg is for starting treatment only[1]. It is not approved as a maintenance dose[1].
The label’s maintenance doses for weight are 5, 10 or 15 mg a week[1]. A higher dose needs more milligrams. So a compounded price quoted at 2.5 mg can rise after the first month.
The maker’s own ladder shows the pattern. Its 2.5 mg vial month is $299[2]. Its 5 mg month is $399[2]. Its 15 mg month is $449 with an on-time refill[2]. Miss the 45-day window, and 15 mg costs $699[2].
Ask a compounded seller the same question. What does the month cost at each dose you may reach?
Prepaying is not a lower monthly price
Some sellers quote a per-month figure for a three- or six-month plan. That figure is the bundle divided by the months. Ask whether the whole bundle is charged at checkout.
Compare it only with the same seller’s one-month price. Then check the refund terms if you stop early. The cancellation guide covers what to ask.
The fees outside the headline
A low medication price can carry a membership, a consult fee and shipping. Together they can erase a small price gap. The all-in monthly calculator adds them up.
Sellers that state no membership are on the no-membership board. Vials of different sizes compare best per milligram. Use the cost-per-mg tool, or the lowest cost per mg board.
Why compounded tirzepatide is not a copy of Zepbound
FDA declared the tirzepatide injection shortage resolved on December 19, 2024[4]. It gave 503A pharmacies until February 18, 2025, and outsourcing facilities until March 19, 2025[4].
After those dates, the shortage no longer covers compounded drugs that are essentially a copy of the approved product[4]. The rules that still apply are in is compounded tirzepatide legal.
FDA also says to discard a multi-dose vial 28 days after first use[3]. A vial that holds more than four weeks of doses is not a longer month. How long a tirzepatide vial lasts works through the milligrams.