Quick Answer
The standard tirzepatide titration schedule starts at 2.5 mg once weekly for weeks 1 to 4, which is a starter dose for tolerability rather than full effect. The dose then moves to 5 mg for weeks 5 to 8. After that, a clinician may increase by 2.5 mg every 4 weeks as needed, up to a maximum of 15 mg once weekly. Common maintenance doses are 5, 10, or 15 mg. The right dose is individual, set by a licensed clinician, and results may vary.
Tirzepatide Dosage Chart
The chart below reflects the titration schedule studied in the SURMOUNT-1 trial (New England Journal of Medicine, 2022) and used for the FDA-approved brand Zepbound, where the maximum dose for weight management is 15 mg once weekly. Mounjaro, the FDA-approved tirzepatide brand for type 2 diabetes, uses the same molecule and a similar stepwise approach.
| Dose (once weekly) | Typical Weeks | Purpose |
|---|---|---|
| 2.5 mg | Weeks 1 to 4 | Starter dose to build tolerance; not intended for maintenance |
| 5 mg | Weeks 5 to 8 | First therapeutic step after the body adjusts |
| 7.5 mg | Weeks 9 to 12 | Optional intermediate increase if needed and tolerated |
| 10 mg | Weeks 13 to 16 | Common maintenance dose for many people |
| 12.5 mg | Weeks 17 to 20 | Optional intermediate increase if needed and tolerated |
| 15 mg | Weeks 21 and beyond | Maximum approved dose for weight management |
These figures describe the medication and the trial schedule, not a promise about any individual outcome. Compounded medications are not FDA-approved as final products, so a compounded plan may not match these exact strengths.
Why Tirzepatide Is Titrated Slowly
Tirzepatide activates two gut hormone receptors, GIP and GLP-1, which can slow digestion. The most common side effects are gastrointestinal: nausea, diarrhea, constipation, and occasional vomiting. These tend to be most noticeable right after a dose increase.
The roughly 4 weeks at each step exists so the body can adjust before the next increase. Starting at a low 2.5 mg dose and moving up gradually gives most people a better chance of tolerating the medication. This is why the 2.5 mg dose is considered a starter dose and not a destination. Rushing the schedule generally raises the risk of side effects without a clear benefit.
If side effects are significant at any step, a clinician may keep you at your current dose longer, slow the pace, or adjust the plan. The schedule is a framework, not a race.
How Compounded Tirzepatide Dosing Compares
Compounded tirzepatide follows the same core principle: start low and increase slowly. The difference is in delivery and flexibility. Brand pens come in fixed strengths, while compounded tirzepatide is typically supplied in vials, which lets a clinician and pharmacy set flexible intermediate doses based on how you respond.
That flexibility means a compounded plan might include doses that fall between the standard brand steps, always under clinical supervision. Compounded medications are not FDA-approved as final products, so the exact dose, concentration, and schedule are individualized rather than tied to a fixed pen strength. Your clinician and the pharmacy determine the plan together, and any change is a clinical decision rather than a self-directed one.
What to Do About a Missed Dose
Tirzepatide is a once-weekly injection, so missed doses happen. General guidance is straightforward:
Always confirm missed dose steps with your prescriber, since the right move depends on your current dose and how long the gap has been.
Tirzepatide vs Semaglutide Dosing
A common question is whether tirzepatide and semaglutide doses can be compared milligram for milligram. They cannot. These are different molecules with different potencies and different titration schedules, so a 5 mg dose of one is not equivalent to a 5 mg dose of the other. Each has its own chart and its own maximum dose.
If you are weighing the two options, see our comparison of tirzepatide vs semaglutide and the separate semaglutide dosage chart and titration schedule to understand how each is dosed on its own terms.
How a Clinician Personalizes Your Plan
The chart above is a starting point, not a fixed prescription. A licensed clinician personalizes the schedule based on factors such as your tolerance, side effects, medical history, other medications, and how your body responds over time. Some people stay at 5 or 10 mg, while others move toward 15 mg. Some need extra time at a step before moving up.
This is also why ongoing check-ins matter. The plan can shift as your response becomes clearer. For a sense of how a course typically progresses, our GLP-1 treatment timeline month by month walks through what each phase can look like. Compounded medications are not FDA-approved as final products, which is another reason clinical oversight stays central throughout.
The Bottom Line
The tirzepatide dosage chart follows a clear pattern: begin at 2.5 mg for tolerance, step up to 5 mg, then increase by 2.5 mg roughly every 4 weeks as needed, up to a maximum of 15 mg once weekly. Common maintenance doses are 5, 10, or 15 mg. The slow titration exists to manage gastrointestinal side effects, and the exact plan is always set and adjusted by a licensed clinician. Brands like Zepbound and Mounjaro are FDA-approved, while compounded tirzepatide is not, so compounded dosing is individualized by the clinician and pharmacy.
This article is for educational purposes only and is not medical advice. It does not replace a consultation with a licensed clinician, who can determine whether any treatment is appropriate for you. Results may vary.
Frequently Asked Questions
What is the standard tirzepatide dosage chart?
The standard schedule starts at 2.5 mg once weekly for weeks 1 to 4, then 5 mg for weeks 5 to 8. After that, a clinician may raise the dose by 2.5 mg every 4 weeks as needed, up to a maximum of 15 mg weekly. Common maintenance doses are 5, 10, or 15 mg. Your clinician sets the plan that fits you, and results may vary.
What is the maximum tirzepatide dose?
For the FDA-approved brand Zepbound used for weight management, the maximum dose is 15 mg once weekly. The 2.5 mg starting dose is intended for tolerability, not as a long-term maintenance dose. A clinician decides whether and when higher doses are appropriate for you.
How often is tirzepatide injected?
Tirzepatide is a once-weekly subcutaneous injection. You pick one day of the week and stay consistent. It can be taken with or without food, and the injection day can be changed if at least 3 days have passed since the last dose, when a clinician confirms that is appropriate.
Does compounded tirzepatide use the same dosing chart?
Compounded tirzepatide follows the same start-low, go-slow principle, but vials allow flexible intermediate doses set by the clinician and pharmacy. Compounded medications are not FDA-approved as final products, so the exact plan is individualized rather than tied to fixed brand pen strengths.
What should I do if I miss a tirzepatide dose?
If your next scheduled dose is more than 3 to 4 days away, take the missed dose when you remember. If it is sooner, skip the missed dose and resume your regular weekly schedule. If more than 2 weeks have passed, you may need to restart at a lower dose. Always confirm with your prescriber.
All Majesta Health medical content is clinically reviewed before publication by US-licensed physicians affiliated with our clinical infrastructure partner, MD Integrations (MDI). Reviewers hold active state medical licenses, are board-certified in primary care or obesity medicine, and specialize in GLP-1 receptor agonist therapy for chronic weight management. MDI is LegitScript certified and SOC 2 Type II accredited.
- US-licensed physicians affiliated with our clinical partner MD Integrations (LegitScript certified, HIPAA, SOC 2 Type II, ISO certified)
- Board-certified in primary care and obesity medicine
- Active state medical licensure required for every prescribing clinician
- Active DEA registration where applicable (note: GLP-1 medications are not controlled substances)
- Telehealth practice across all 50 US states and DC through the MD Integrations Medical Services Organization
- Dispensing pharmacy partner: Belmar Pharma Solutions (LegitScript certified, NABP accredited, 503A and 503B compounding)