Tirzepatide Weekly Dosage Chart: Starting, Maintenance & Maximum Doses
Tirzepatide Dosage Chart: Weekly Dosing Schedule & Timeline
Review the common tirzepatide starting dose, weekly dose levels, maintenance doses, and an illustrative dose-escalation timeline for Mounjaro® and Zepbound®. This schedule is educational and does not replace the individualized treatment plan provided by your prescriber.
Quick Answer
Tirzepatide commonly starts at 2.5 mg once weekly for four weeks. The dose may then increase to 5 mg once weekly. Additional increases are made in 2.5 mg steps after at least four weeks on the current dose when clinically appropriate. The highest labeled weekly dose is 15 mg.
Tirzepatide Weekly Dose Progression
This timeline shows the earliest possible progression through the labeled dose levels. It does not mean every patient should reach each dose or increase every four weeks.
Used to begin treatment and help the body adjust.
Some patients may remain at this dose when it is effective and well tolerated.
An intermediate increase that may be prescribed after at least four weeks at 5 mg.
One of the labeled Zepbound maintenance-dose options.
An intermediate step before the highest dose when a further increase is prescribed.
The highest labeled weekly dose. It is not required or appropriate for every patient.
Common Zepbound® Maintenance Doses for Weight Management
The labeled maintenance-dose options for chronic weight management are 5 mg, 10 mg, or 15 mg once weekly. The selected dose depends on treatment response and tolerability.
Need to Convert Your Dose into mL or Syringe Units?
Use the free GoalBMI Wellness Tirzepatide Dose-to-Units Calculator to estimate injection volume, U-100 syringe units, doses per vial, and approximate weekly supply.
Questions About Your Tirzepatide Dose or Timeline?
Eligible patients can schedule a physician-supervised online medical weight loss consultation to review treatment response, side effects, and their prescribed dosing plan.
Zepbound® vs. Mounjaro® Tirzepatide Dosage Chart
Zepbound and Mounjaro contain the same active ingredient, tirzepatide, but they are prescribed for different labeled uses. Their starting dose and available dose strengths are similar, while their maintenance-dose guidance differs.
Zepbound®
Mounjaro®
Complete Tirzepatide Weekly Dosage Chart
This table shows the earliest illustrative progression through the available weekly dose levels. Many patients remain at the same dose longer or stop at a lower maintenance dose.
| Illustrative Period | Weekly Dose | Dose Type | General Purpose |
|---|---|---|---|
| Weeks 1–4 | 2.5 mg | Starting dose | Treatment initiation and tolerability |
| Weeks 5–8 or longer | 5 mg | Maintenance option | First labeled maintenance option for Zepbound |
| Weeks 9–12 or later | 7.5 mg | Escalation dose | Intermediate increase when prescribed |
| Weeks 13–16 or later | 10 mg | Maintenance option | Higher labeled maintenance option |
| Weeks 17–20 or later | 12.5 mg | Escalation dose | Intermediate step before 15 mg |
| Week 21 or later | 15 mg | Maximum dose | Highest labeled weekly tirzepatide dose |
Why Your Provider May Delay a Tirzepatide Dose Increase
Increasing the dose is not automatically better. Treatment should balance response, tolerability, medical history, and the reason tirzepatide was prescribed.
Nausea or Vomiting
Persistent symptoms may lead your provider to keep you at the current dose longer.
Diarrhea or Constipation
A dose increase may be postponed while gastrointestinal side effects are evaluated and managed.
Difficulty Eating or Drinking
Significant appetite suppression or reduced fluid intake may require clinical review.
Good Response at the Current Dose
A patient may remain at a lower dose when treatment is working and a higher dose is not needed.
Other Medications or Conditions
Medical history, other medications, and clinical factors may affect dose planning.
Provider Judgment
Your prescriber may choose a slower schedule based on your overall response and tolerability.
What Happens If You Miss a Tirzepatide Dose?
General product guidance uses a four-day, or 96-hour, window for a missed weekly dose.
Then continue with your regular once-weekly schedule.
Take the next dose on your regularly scheduled day.
Can You Change Your Weekly Tirzepatide Injection Day?
The weekly injection day may generally be changed when needed, provided there are at least 72 hours between two consecutive doses.
Confirm the timing with your healthcare provider if you have missed multiple injections, stopped treatment for an extended period, or are uncertain about restarting.
Convert Your Prescribed Dose to mL and Syringe Units
Enter the concentration shown on your medication label to estimate injection volume, U-100 syringe units, total medication in the vial, and approximate weekly supply.
What to Expect at Each Tirzepatide Dose Level
Each dose level has a different role. The starting dose introduces the medication, intermediate doses support gradual escalation, and maintenance doses may be continued when they provide an appropriate balance of response and tolerability.
Beginning Treatment
The 2.5 mg weekly dose is used to begin treatment and help the body adjust. It is generally followed by 5 mg after four weeks.
First Maintenance-Level Option
Some patients remain at 5 mg when treatment is working and their provider determines that a higher dose is not needed.
Intermediate Dose Increase
The 7.5 mg dose may be prescribed as an intermediate step between 5 mg and 10 mg.
Higher Maintenance-Level Option
Ten milligrams is one of the labeled Zepbound maintenance doses. Selection depends on treatment response and tolerability.
Intermediate Step Before 15 mg
The 12.5 mg dose may be used as a gradual step before the maximum weekly dose when a further increase is prescribed.
Highest Labeled Weekly Dose
Fifteen milligrams is the maximum labeled weekly tirzepatide dose. It is not automatically the best dose for every patient.
Can You Stay on a Lower Tirzepatide Dose?
Yes. Patients do not have to advance through every available dose. A provider may keep someone at a lower dose when treatment is producing an appropriate response and is well tolerated.
The ongoing dose should consider treatment goals, side effects, medical history, other medications, and overall clinical response.
Good Treatment Response
A higher dose may not be needed when the current dose is working.
Better Tolerability
Remaining at a lower dose may help manage persistent side effects.
Provider Recommendation
Your prescriber may choose a slower or individualized schedule.
Questions to Discuss With Your Tirzepatide Prescriber
A dosage chart cannot determine whether your dose should increase. Review your progress and symptoms with the clinician managing your treatment.
Have I been on the current dose for at least four weeks?
Am I experiencing nausea, vomiting, diarrhea, or constipation?
Am I able to eat, drink, and maintain adequate hydration?
Is the current dose already supporting my treatment goals?
Have any medications, health conditions, or symptoms changed?
Has my prescribing provider approved the next dose level?
Does a Weight-Loss Plateau Mean You Need a Higher Dose?
Not necessarily. Weight can fluctuate from week to week, and a short period without a change on the scale does not automatically mean the medication has stopped working.
Your provider may review the overall trend, appetite, nutrition, physical activity, side effects, medication adherence, and treatment goals before adjusting the dose.
Free Tirzepatide Dose-to-Units Calculator
This dosage chart explains weekly dose progression. The calculator converts a dose that has already been prescribed into mL and U-100 syringe units using the concentration shown on the medication vial.
Need Help Reviewing Your Tirzepatide Dose Progression?
Eligible patients can schedule an online consultation to discuss treatment response, side effects, medication history, weight-management goals, and their prescribed dosing plan.
Tirzepatide Dosage Chart and Timeline FAQ
What is the usual starting dose of tirzepatide?
Tirzepatide commonly starts at 2.5 mg once weekly for four weeks. It is generally followed by 5 mg once weekly unless the prescribing provider recommends another plan.
How often can the tirzepatide dose be increased?
Additional increases may be made in 2.5 mg steps after at least four weeks on the current dose, when clinically appropriate and prescribed.
Does everyone need to reach 15 mg?
No. Fifteen milligrams is the maximum labeled weekly dose, but it is not required or appropriate for every patient.
What are the Zepbound maintenance doses?
The labeled Zepbound maintenance-dose options for chronic weight management are 5 mg, 10 mg, or 15 mg once weekly.
Are 7.5 mg and 12.5 mg maintenance doses?
For Zepbound chronic weight management, 7.5 mg and 12.5 mg are generally intermediate escalation doses rather than listed maintenance-dose options.
Can I remain on 5 mg tirzepatide?
A provider may keep a patient at 5 mg when it provides an appropriate response and is well tolerated.
Can side effects delay a dose increase?
Yes. A prescriber may delay an increase when persistent symptoms, hydration concerns, or other tolerability issues are present.
Is this timeline a required dosing schedule?
No. The timeline shows the earliest illustrative progression. Patients may remain at the same dose longer or stop at a lower maintenance dose.
Can I increase my dose when weight loss slows?
A temporary plateau does not automatically mean the dose should increase. Your provider should review your overall progress first.
Is Mounjaro dosing the same as Zepbound dosing?
Both contain tirzepatide and use the same available weekly dose strengths, but they have different labeled indications and maintenance-dose language.
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