The Zepbound Dosage Chart: From Starting Dose to Units on a Vial

What's the Zepbound dosage chart, from starting dose to maintenance?

Six strengths, one ladder, and everyone starts at the bottom regardless of how much weight loss they're eventually aiming for. The first step exists to let the body adjust to tirzepatide, not to produce results — the label doesn't count it as a treatment dose at all.

That's the label's minimum pace — four weeks on a given dose before the next increase — not a fixed timeline everyone follows identically. A prescriber can hold you on any step longer if side effects need more time to settle, and nothing about the schedule requires reaching the top.

How many units is 2.5mg, 7.5mg, or 12.5mg of Zepbound?

For an actual Zepbound KwikPen or single-dose vial from LillyDirect, this question doesn't really apply — both are manufactured pre-measured to the exact milligram on your prescription, so there's nothing to draw and nothing to calculate. "Units" is syringe language, and it only becomes relevant if you're on compounded tirzepatide, where a pharmacy fills a multi-dose vial at a given concentration and you draw your own dose with an insulin syringe marked in units rather than milligrams.

The conversion depends on that vial's concentration in mg/mL, and compounding pharmacies don't standardize it — 10 mg/mL and 20 mg/mL are two of the more common concentrations in circulation, but they're far from the only ones. Here's what 2.5mg, 7.5mg, and 12.5mg work out to on each:

At 10 mg/mL

• 2.5mg = 25 units
• 7.5mg = 75 units
• 12.5mg = 125 units — exceeds a standard 100-unit insulin syringe; ask your pharmacy how they want this drawn

At 20 mg/mL

• 2.5mg = 12.5 units
• 7.5mg = 37.5 units
• 12.5mg = 62.5 units

Seventy-five units means a very different dose depending on which vial is in your fridge — 7.5mg at 10 mg/mL, or roughly half that at 20 mg/mL. Always check the concentration printed on your specific vial before drawing.

Is Zepbound's dosing schedule different from Mounjaro's?

No — it's branding, not biology. Zepbound and Mounjaro are the same drug, tirzepatide, made by the same manufacturer, and both climb the identical ladder: 2.5mg to start, 2.5mg increments, a four-week minimum between steps, 15mg as the ceiling. What separates them is the FDA approval each brand name carries — Zepbound for chronic weight management, Mounjaro for type 2 diabetes — and the trial data that sits behind each one.

That difference in indication shapes how the maintenance dose gets chosen in practice, even though the schedule itself doesn't change. Zepbound's weight-management trials centered on 5mg, 10mg, and 15mg as three separately evaluated endpoints. Mounjaro's diabetes dosing, by contrast, is titrated against blood sugar response, so a clinician may deliberately settle a patient at an intermediate step like 7.5mg 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. If your prescription says Zepbound, you're working inside Zepbound's pricing, coverage, and label — a Mounjaro coupon or savings program doesn't transfer, even though the injection in the pen is identical.

What's the highest Zepbound dose — and do you have to reach 15mg?

Fifteen milligrams once weekly is the ceiling — there's no FDA-approved Zepbound strength above it, and no higher dose has gone through the phase 3 trial process the way 2.5mg through 15mg did. You don't have to get there, though. The label treats 5mg, 10mg, and 15mg as three separate, equally valid maintenance doses, not a single target with two waypoints along the way, and it explicitly supports settling on a lower one if a higher dose isn't tolerated.

The trial data explains why a lot of prescribing still aims for the top of the range. In SURMOUNT-1 at 72 weeks, average weight change ran roughly 15% at the 5mg maintenance dose, 19.5% at 10mg, and close to 21% at 15mg — against roughly 3% on placebo.

That's a real difference, but not one that makes 5mg or 10mg a lesser choice on its own — whether a lower maintenance dose is right for you comes down to how you're tolerating it and what you're weighing against cost and side effects, not a rule that says higher is automatically better.

What if you miss a Zepbound dose, or can't tolerate a step?

The rule is a four-day, or 96-hour, window — a detail worth getting right, because it's not the same across every GLP-1 on the market. Wegovy's injection uses a shorter two-day window, and Ozempic's runs longer, at five days; mixing the three up means either taking a dose too late or skipping one you didn't need to. For Zepbound specifically: if fewer than four days have passed since your scheduled injection day, take the missed dose as soon as you remember, then resume your normal weekly schedule. If more than four days have passed, skip that dose entirely and take the next one on your regular day — never two doses within three days of each other to make up for lost time.

The label doesn't spell out a specific restart protocol for someone who's missed several weeks in a row; some prescribers restart at a lower dose in that situation, others don't. A step that isn't tolerated has a simpler built-in answer either way — hold at the current dose longer, or drop back to the last one that worked, instead of advancing on the calendar regardless of how you're feeling.

Does the Zepbound dose or schedule change in perimenopause or menopause?

No — there's no FDA-recognized separate ladder for perimenopausal or postmenopausal women, and the 2.5mg-to-15mg schedule above is the same regardless of reproductive stage. What does exist is research on how well that standard schedule tends to work across reproductive stages, which is a different question from what dose to start on. A post hoc analysis of the SURMOUNT trials, published in the journal Obesity, broke weight-loss outcomes down by menopausal status and found substantial reduction versus placebo among premenopausal, perimenopausal, and postmenopausal participants alike, all on the identical dosing schedule — with nothing in that analysis suggesting any group should be titrated differently. A separate retrospective cohort looked at whether menopause hormone therapy changes how postmenopausal women respond to tirzepatide, and found a difference in degree of weight loss between hormone-therapy users and non-users. That's a response finding too, not a dosing one — neither study changes the ladder itself.

Does the price change as your Zepbound dose goes up?

On LillyDirect, yes, in steps. Eli Lilly's own self-pay program prices the 2.5mg starting dose at $299 a month, moves to $399 at 5mg, then settles at a flat $449 across every dose from 7.5mg through 15mg — going up in dose past that point doesn't raise the self-pay price any further. The discount holds only if you refill within 45 days of your previous shipment's delivery; miss that window and the price resets considerably higher for that fill.

Compounded tirzepatide programs generally price differently — some hold a flat rate regardless of where you are in titration, others step the price up the way LillyDirect does. That's a genuinely different, non-FDA-approved product legally available only on a narrower basis than it was a couple of years ago, so it's worth reading the legal footing alongside the price. For the full comparison across insurance, self-pay, and compounded routes, see Zepbound cost and Zepbound without insurance.

Who sets and adjusts your Zepbound dose — and where to get prescribed

Every number on this page is a reference to check your plan against, not a plan to run yourself — a prescriber decides your starting dose, when you're ready to step up, and whether to hold or drop back.

Telehealth has become a common route into a Zepbound or compounded tirzepatide prescription, particularly for women navigating a menopause-related weight shift alongside everything else going on in their forties and fifties. Henry Meds offers compounded tirzepatide with prescriber-managed titration; Mochi Health pairs flat-rate dosing with ABOM-certified obesity-medicine physicians; Willow keeps intake straightforward in the states it covers. Each works from the same underlying FDA dosing logic — what differs is price, format, and how closely a clinician stays involved as you move through it.