Tirzepatide Maintenance Dose: The Full Dosage Chart (2026)
Whether you're three weeks into tirzepatide or still comparing it against your prescriber's plan, the numbers below are the ones to cross-check — the FDA dose ladder, the unit math if you're on a compounded vial, and how the price actually moves as the dose climbs.
Tirzepatide's maintenance dose is one of three FDA-evaluated doses — 5mg, 10mg, or 15mg once weekly — reached via a 2.5mg starting dose that climbs in 2.5mg steps every 4 weeks. Zepbound (weight management) and Mounjaro (type 2 diabetes) use the identical schedule; only the brand name and the trial data behind them differ. A prescriber sets the starting point and every step up from there, and none of the three maintenance doses is mandatory — 5mg and 10mg are just as FDA-recognized as 15mg.
What's the tirzepatide maintenance dose, and how long does it take to get there?
There isn't a single number. The FDA evaluated three tirzepatide maintenance doses — 5mg, 10mg, and 15mg once weekly — and all three are approved endpoints, not just the highest one. Every patient starts at 2.5mg regardless of which maintenance dose they'll eventually land on, because that first dose exists purely to let the body adjust, not to treat anything.
From there, the dose increases in 2.5mg increments no sooner than every 4 weeks. Reaching the 5mg maintenance dose takes at least 8 weeks. Reaching 10mg takes at least 16 weeks. Reaching the maximum 15mg takes at least 20 weeks — roughly five months of stepping up before you're at the ceiling, assuming no step gets extended for tolerability.
The full tirzepatide dosing chart: starting dose to maintenance, step by step
Both Zepbound and Mounjaro pens are prefilled, single-dose autoinjectors — you don't dial a dose or draw anything with a syringe. The chart below is the same schedule printed on both labels.
starting dose only, not a maintenance dose
first FDA-recognized maintenance dose
intermediate titration step
second FDA-recognized maintenance dose
intermediate titration step
maximum dose
That ladder is a ceiling, not a mandate. A prescriber can pause on any step for another 4 weeks if side effects haven't settled, and the label explicitly allows dropping back down a level rather than pushing forward on a fixed timetable.
Zepbound and Mounjaro use the identical ladder — the labels just frame it differently
Zepbound is tirzepatide approved for weight management; Mounjaro is the same molecule approved for type 2 diabetes. The starting dose, the 2.5mg step size, the 4-week minimum interval, and the 15mg ceiling are identical between them. What differs is the trial data each label leans on and how the maintenance dose gets chosen in practice.
For Zepbound, SURMOUNT-1 evaluated 5mg, 10mg, and 15mg head to head over 72 weeks and reported average weight change of roughly 15% at 5mg, 19.5% at 10mg, and close to 21% at 15mg, against roughly 3% on placebo — the trial data behind why higher doses are often the target for weight management. For Mounjaro, the equivalent SURPASS trials anchor around the same three doses, but because diabetes titration is driven by blood sugar response rather than a body-weight endpoint, a clinician may deliberately stabilize a patient at an intermediate step like 7.5mg or 12.5mg if that's where glucose control is met — there's no equivalent reason to stop mid-ladder on the weight-management side unless tolerability is the issue.
How many units is 2.5mg of tirzepatide? Converting mg to units for compounded vials
None of this unit math applies to a Zepbound or Mounjaro pen, or to a LillyDirect self-pay vial — those are single-dose, pre-measured to the exact milligram, so there's nothing to calculate. It matters only if you're on compounded tirzepatide from a vial, where you draw your own dose with an insulin syringe and the syringe reads in units, not milligrams.
The formula: divide your prescribed mg dose by the vial's concentration in mg/mL, then multiply by 100. Compounded tirzepatide vials vary more in concentration than compounded semaglutide does — 5, 10, 12.5, 17, and 20 mg/mL are all in circulation depending on the pharmacy — so the same syringe reading can represent very different doses on two different vials.
Conversion at 10 mg/mL
- 2.5mg = 25 units
- 5mg = 50 units
- 7.5mg = 75 units
- 10mg = 100 units (fills a standard 1mL/100-unit syringe)
- 15mg = 150 units — exceeds a standard 100-unit syringe; ask your pharmacy how they handle this
Conversion at 20 mg/mL
- 2.5mg = 12.5 units
- 5mg = 25 units
- 7.5mg = 37.5 units
- 10mg = 50 units
- 15mg = 75 units
Fifty units means completely different doses depending on which of those vials is in your fridge — 5mg at 10 mg/mL, or 2.5mg at 20 mg/mL. Always read the concentration printed on your specific vial before drawing, and if your provider's instructions list a dose in mg without also giving you the matching unit count for your vial, ask before you inject.
What if you can't tolerate a dose step, or you miss a shot?
If a step causes side effects that don't settle, the label's built-in answer is to hold at the current dose for another 4 weeks — or drop back to the last tolerated dose — rather than advancing on the calendar regardless. Reaching 15mg was never the actual goal; reaching a dose you can sustain is.
For a missed shot, the rule is a 4-day (96-hour) window: if fewer than 4 days have passed since your scheduled day, take the missed dose as soon as you remember, then resume your normal weekly schedule. If more than 4 days have passed, skip that dose entirely and take the next one on your regular day — never two doses within 3 days of each other to make up for it. Unlike some other GLP-1 labels, tirzepatide's prescribing information doesn't spell out a specific restart-at-a-lower-dose protocol for someone who's missed several weeks in a row — if that happens, it's a conversation for your prescriber rather than a default rule to follow on your own.
Does your monthly price go up as your tirzepatide dose increases?
For the FDA-approved brand, yes — meaningfully. LillyDirect's self-pay Zepbound vials price by dose tier, starting at $299 a month for the 2.5mg dose. Step up to 5mg and it's $399. From 7.5mg all the way through 15mg, it settles at a flat $449 — provided you refill within 45 days of your last delivery. Miss that window and the price reverts to a considerably steeper per-dose rate; the exact figures differ depending on the source, so it's worth confirming the current number directly before you order rather than trusting a screenshot from a blog.
Compounded programs handle this differently, and it's worth pricing out before you titrate rather than after. Mochi Health charges a flat $199 for the medication at any dose from 2.5mg through 15mg. Add its separate ~$79 monthly membership and the all-in total comes to about $278 — a number that doesn't move whether you're four weeks in or at the ceiling. Willow advertises a similarly flat structure at ~$399 a month, though that claim isn't universally confirmed: several independent trackers describe Willow's price stepping up at higher doses instead, which would mean the 'flat rate' pitch only holds for the first couple of months of most people's titration. That's a real enough discrepancy that it belongs on your own checklist before you sign up, not just this page's.
Can you stay at a lower maintenance dose than 15mg — or do you have to go all the way up?
You don't have to reach 15mg. The Zepbound label treats 5mg, 10mg, and 15mg as three separate, equally valid maintenance doses, and it explicitly instructs considering a lower maintenance dose if a higher one isn't tolerated. In SURMOUNT-1, the 5mg group still averaged roughly 15% weight change at 72 weeks — a meaningfully lower number than 15mg's near-21%, but not a trivial one either. Whether a lower long-term dose is the right call for you is a decision your prescriber makes with you, weighing side effects, response, and cost against the trial data — not something the ladder itself decides for you.
Is the dosing schedule any different in perimenopause or menopause?
No — there's no FDA-recognized separate dose schedule for perimenopausal or postmenopausal women, and no published tirzepatide study establishes one. The 2.5mg-to-15mg ladder is the same regardless of reproductive stage.
What does exist is a post hoc analysis of the SURMOUNT trials, published in the journal Obesity, that broke weight-loss outcomes down by reproductive stage — premenopausal, perimenopausal, and postmenopausal participants all showed substantial weight reduction versus placebo on the standard dosing schedule, with no suggestion in that analysis that a different dose would serve any group better. A separate retrospective cohort looked specifically at whether menopause hormone therapy changes how postmenopausal women respond to tirzepatide, finding a difference in degree of weight loss between hormone-therapy users and non-users — a response question, not a dosing one. Neither study changes the ladder above; they're about how well a given dose works for you, not what dose to start on.
Who actually sets and adjusts your dose — and where to get prescribed
Every step on this ladder is a prescription decision. A prescriber determines your starting dose, decides when you're ready to step up, and decides whether to hold, drop back, or extend a level — whether that prescriber is in an exam room or on a telehealth video call. Bring the chart on this page to that conversation as a cross-check against your own plan, not as a substitute for it.
Telehealth has become the more common route to a tirzepatide prescription for weight management, particularly for women managing this alongside a menopause-related weight shift. Henry Meds offers both oral and injectable tirzepatide with prescriber-managed titration; Mochi Health pairs ABOM-certified obesity-medicine physicians with flat-rate dosing; Willow keeps the intake process simple in the states it covers. Each handles the same FDA ladder — what differs is the price, the format, and how closely the clinician stays involved as you move through it.
Frequently asked questions
What is the tirzepatide maintenance dose?+–
It's one of three FDA-evaluated doses — 5mg, 10mg, or 15mg once weekly. All three are recognized maintenance doses, not just the highest one. Which one you land on is set by your prescriber based on tolerability and response, typically after 8 to 20 weeks of titration from the 2.5mg starting dose.
What is the starting dose of tirzepatide?+–
2.5mg once weekly, for both Zepbound and Mounjaro, regardless of which maintenance dose you'll eventually reach. It's a tolerability dose, not a therapeutic one — the label doesn't consider it an approved maintenance dose on its own.
How long does it take to reach 15mg of tirzepatide?+–
At least 20 weeks, or roughly five months, following the standard 4-week-per-step schedule: 2.5mg, then 5mg, 7.5mg, 10mg, 12.5mg, and finally 15mg. It can take longer if your prescriber extends any step for tolerability.
Is the Zepbound dosing schedule the same as Mounjaro's?+–
Yes. Both use the identical 2.5mg starting dose, 2.5mg increments every 4 weeks minimum, and 15mg maximum. The difference is in how the maintenance dose is typically chosen — Zepbound's weight-management trials centered on 5mg, 10mg, and 15mg, while Mounjaro's diabetes dosing is titrated to blood sugar response and can stabilize at an intermediate step.
How many units is 2.5mg of tirzepatide?+–
It depends entirely on your vial's concentration. At 10 mg/mL, 2.5mg equals 25 units. At 20 mg/mL, 2.5mg equals 12.5 units. This only applies to compounded vials drawn with a syringe — Zepbound and Mounjaro pens, and LillyDirect's self-pay vials, are pre-measured and don't require any unit math.
What happens if I miss a dose of tirzepatide?+–
If fewer than 4 days (96 hours) have passed since your scheduled day, take the missed dose as soon as you remember and resume your normal weekly schedule. If more than 4 days have passed, skip it and take your next dose on the regular day. Never take two doses within 3 days of each other.
Can I stay on a lower tirzepatide dose instead of going to 15mg?+–
Yes. The label recognizes 5mg, 10mg, and 15mg as equally valid maintenance doses, and explicitly supports a lower maintenance dose when a higher one isn't tolerated. Whether a lower dose is the right long-term choice for you is a decision made with your prescriber, weighing side effects and response.
Does tirzepatide's dosing schedule change during perimenopause or menopause?+–
No — there's no FDA-recognized different schedule based on menopausal status. A post hoc analysis of the SURMOUNT trials found substantial weight reduction on the standard dosing schedule across premenopausal, perimenopausal, and postmenopausal groups alike, with no suggestion that dosing itself should differ.
Does the price of tirzepatide go up as my dose increases?+–
For LillyDirect's brand-name Zepbound vials, yes — pricing steps from $299 at the starting dose up to a flat $449 at maintenance doses (with a 45-day refill requirement to hold that rate). Some compounded programs like Mochi Health keep the medication price flat at every dose; others, including Willow by some accounts, may step the price up as the dose rises — confirm directly before you enroll.
Who adjusts my tirzepatide dose?+–
Your prescriber — whether that's an in-person physician or a telehealth clinician. They set your starting dose, decide when you're ready to step up, and can hold or lower the dose if side effects don't settle. No dose change on this ladder is self-directed.
This article is educational and not medical advice. Talk to a qualified clinician about your situation.