Tirzepatide Dosage Chart: Standard Weekly Dosing for Weight Loss and Type 2 Diabetes

The standard tirzepatide dosage chart begins at 2.5 mg injected once weekly for four weeks, then moves to 5 mg weekly, and increases by 2.5 mg roughly every four weeks as tolerated. The maximum recommended dose is 15 mg once weekly, and no higher dose has been studied. Tirzepatide is dosed in fixed milligrams rather than by body weight, and only a licensed prescriber should change your schedule.

Tirzepatide is sold as Mounjaro for type 2 diabetes and as Zepbound for chronic weight management. Both brands use the same six dose strengths and the same step-up schedule, so a single chart covers most treatment plans.

Standard Tirzepatide Dosage Chart

This schedule reflects the FDA-approved labeling for both brands. A prescriber may keep you at a lower dose longer, or stop titration altogether, if side effects are uncomfortable or your goals are already being met.

Step	Weekly dose	Typical timing	What it is for
1	2.5 mg	Weeks 1-4	Starter dose; not intended to control blood sugar on its own
2	5 mg	Weeks 5-8	First dose that meaningfully lowers A1C for many people
3	7.5 mg	Weeks 9-12	Optional step if more effect is needed
4	10 mg	Weeks 13-16	Continued titration as tolerated
5	12.5 mg	Weeks 17-20	Continued titration as tolerated
6	15 mg	Week 21 and beyond	Maximum recommended weekly dose

Not everyone needs to reach 15 mg. Many patients stay at 5 mg, 7.5 mg, or 10 mg long term because appetite, weight, and blood sugar targets are already being met at that level.

Tirzepatide Dosage for Weight Loss vs. Type 2 Diabetes

The tirzepatide dosage for weight loss and the dose used for type 2 diabetes follow the exact same titration schedule. The differences come down to the brand name on the pen, the approved indication, and insurance coverage rules, not the milligrams.

Brand	Approved use	Available weekly doses	Starting dose
Mounjaro	Type 2 diabetes	2.5, 5, 7.5, 10, 12.5, 15 mg	2.5 mg once weekly
Zepbound	Chronic weight management	2.5, 5, 7.5, 10, 12.5, 15 mg	2.5 mg once weekly

Zepbound and Mounjaro share the same active ingredient and the same strengths. What changes is the diagnosis written on the prescription, which affects price, prior authorization, and how quickly a plan may approve a higher dose.

What to Expect at Each Dose Step

Dose increases are not automatic. Your prescriber decides whether to move up based on tolerance, weight trends, A1C, and any side effects you report.

• 2.5 mg: A starter dose that helps your body adjust. It is not intended to control blood sugar on its own.
• 5 mg: The first dose that lowers A1C for many people, and the most common long-term maintenance dose.
• 7.5 mg and 10 mg: Middle steps for people who need more appetite suppression or glucose control.
• 12.5 mg and 15 mg: The highest steps, used when lower doses are tolerated but not fully effective.

Common side effects at any step include nausea, diarrhea, vomiting, constipation, and injection-site reactions. These often ease after the first few weeks at a new dose, but they can return briefly with each increase.

Missed Doses and Titration Timing

Tirzepatide is injected on the same day each week, with or without food, at any time of day. If you miss a dose, the label says to take it within four days (96 hours) of the missed day.

If more than four days have passed, skip the missed dose and resume your regular weekly schedule. Never double a dose to catch up, because two injections close together raise the risk of nausea, vomiting, dehydration, and low blood sugar. If you are unsure whether to move up a step, call your prescriber before injecting a higher dose.

How Tirzepatide Dosing Compares With Other Peptides and GLP-1 Drugs

Research peptides use different units

Dosing charts for research peptides do not work the same way as prescription drug labeling. A bpc-157 dosage chart by weight, for example, lists micrograms per kilogram for laboratory animals, and a mots-c dosage chart is written for research settings rather than human prescriptions.

Compounded tirzepatide is not FDA-approved, and its label may describe concentration in mg/mL or units on a syringe instead of the familiar pen strengths. That mismatch is a common source of dosing errors.

Semaglutide and cagrisema charts

Tirzepatide and semaglutide are both once-weekly injections, but their charts are not interchangeable. A semaglutide 5mg/ml dosage chart measures liquid volume in units, while tirzepatide is prescribed as a fixed milligram dose per pen.

Online comparisons, including the tirzepatide vs semaglutide dosage reddit discussions people share, often blur these two systems together. Cagrisema is a combination candidate still in clinical study, so a cagrisema dosage chart describes trial protocols rather than an approved product.

Safety Warnings and When to Call Your Prescriber

Tirzepatide carries a boxed warning for thyroid C-cell tumors and is not recommended for people with a personal or family history of medullary thyroid cancer or MEN2. Tell your prescriber about any history of pancreatitis, gallbladder disease, kidney problems, or diabetic retinopathy.

Call your prescriber promptly if you notice any of the following:

• Severe or persistent abdominal pain that may radiate to your back
• Signs of gallbladder problems, such as upper-right abdominal pain, fever, or jaundice
• Symptoms of low blood sugar, especially if you take insulin or a sulfonylurea
• Vision changes, mood changes, or thoughts of self-harm

Tirzepatide is not recommended during pregnancy, and people who can become pregnant should discuss contraception with their clinician while taking it. Any dose change should be reviewed with a healthcare professional who knows your full medical history.

COMMON QUESTIONS

Frequently Asked Questions

What is the starting dose of tirzepatide?

The starting dose of tirzepatide is 2.5 mg injected once weekly for four weeks. This dose is meant to let your body adjust and is not intended to control blood sugar on its own. After four weeks, most prescribers move patients to 5 mg once weekly if the drug is tolerated.

What is the maximum dose of tirzepatide?

The maximum recommended tirzepatide dose is 15 mg once weekly for both Mounjaro and Zepbound. Doses above 15 mg have not been studied in clinical trials. Not everyone needs to reach the maximum, and many people stay at a lower dose long term.

Is tirzepatide dosed by body weight?

No. Tirzepatide is given as a fixed once-weekly dose that is the same for most adults, regardless of body weight. This differs from some peptide and pediatric charts that calculate micrograms per kilogram. Your prescriber may still adjust how fast you move up based on side effects, blood sugar, and how well you respond.