What is My Tirzepatide Dose? Mounjaro Calculator 2026

The most common question for patients starting Mounjaro or Zepbound is "what is my correct dose?" Our Tirzepatide dosage calculator 2026 provides the answer instantly, using FDA-approved dosing guidelines. With over 50,000 monthly users, it's the most trusted tool for tirzepatide dosing information.

FDA-Approved Dosing Table

Week	Dose	Notes
1-4	2.5 mg weekly	Starting dose - do not increase
5-8	5 mg weekly	First maintenance dose
9-12	7.5 mg weekly	If additional control needed
13-16	10 mg weekly	Second maintenance level
17-20	12.5 mg weekly	If further control needed
21+	15 mg weekly	Maximum dose

❓ Frequently Asked Questions About Tirzepatide

What is the correct Tirzepatide (Mounjaro) starting dose?

The FDA-approved starting dose for Tirzepatide (Mounjaro/Zepbound) is 2.5 mg once weekly for 4 weeks. After 4 weeks, increase to 5 mg once weekly. If additional glycemic control or weight loss is needed, increase in 2.5 mg increments after at least 4 weeks on current dose. Maximum dose is 15 mg once weekly.

How do I titrate Tirzepatide?

Titration schedule: Weeks 1-4: 2.5 mg weekly. Weeks 5-8: 5 mg weekly. Weeks 9-12: 7.5 mg weekly (if needed). Weeks 13-16: 10 mg weekly (if needed). Weeks 17-20: 12.5 mg weekly (if needed). Weeks 21-24: 15 mg weekly (maximum). Always follow your doctor's specific prescription. Never increase dose faster than every 4 weeks.

What is the maximum Tirzepatide dose?

The maximum FDA-approved dose of Tirzepatide is 15 mg once weekly. Do not exceed this dose. Higher doses increase risk of side effects including severe nausea, vomiting, pancreatitis, and gallbladder issues. Always follow your healthcare provider's prescription.

What if I miss a dose of Mounjaro?

If you miss a dose within 4 days of your scheduled dose, take it as soon as possible. If more than 4 days have passed, skip the missed dose and take your next dose on the regularly scheduled day. Do not take two doses within 3 days of each other. Resume your regular dosing schedule.

What are the side effects of Tirzepatide?

Common side effects: nausea, diarrhea, vomiting, constipation, abdominal pain, dyspepsia, injection site reactions, fatigue. Serious side effects: pancreatitis, gallbladder disease, kidney injury, severe hypoglycemia (especially with sulfonylureas or insulin), thyroid C-cell tumors (contraindicated in MEN2 or personal/family history of MTC). Seek emergency care if you experience severe abdominal pain radiating to back, persistent nausea/vomiting, or symptoms of allergic reaction.

Can I use Tirzepatide for weight loss?

Yes! Tirzepatide is FDA-approved for chronic weight management under the brand name Zepbound for adults with obesity (BMI ≥30) or overweight (BMI ≥27) with at least one weight-related condition. The dosing schedule is the same as Mounjaro. Always consult your doctor to determine if Zepbound is right for you.

How long does it take for Tirzepatide to work?

Patients typically see blood sugar improvements within 1-2 weeks. Weight loss results are usually seen within 4-8 weeks at the 5 mg dose. Maximum effects are typically achieved at 4-6 months on maintenance doses. Individual results vary.

Is Tirzepatide safe with other diabetes medications?

Tirzepatide can be used with metformin, SGLT2 inhibitors, and sulfonylureas. However, when used with sulfonylureas or insulin, there is an increased risk of hypoglycemia. Your doctor may need to adjust doses of these medications. Always inform your healthcare provider of all medications you take.

⚠️ CRITICAL MEDICAL DISCLAIMER

NOT MEDICAL ADVICE: This Tirzepatide dosage calculator is for EDUCATIONAL AND INFORMATIONAL PURPOSES ONLY. It does not constitute medical advice and should not replace professional medical judgment. Always consult your healthcare provider before starting, changing, or adjusting any medication.

FDA WARNING (July 2024): The FDA has received reports of serious adverse events, some requiring hospitalization, that may be related to overdoses due to dosing errors associated with compounded tirzepatide injectable products. Several reports describe health care providers incorrectly calculating the intended dose when converting from milligrams to units or milliliters, which resulted in patients administering five to 10 times more than the intended dose.

PRESCRIPTION ONLY: Tirzepatide (Mounjaro/Zepbound) is a prescription medication. It should only be used under the supervision of a licensed healthcare provider. Do not purchase from online pharmacies without a valid prescription.

EMERGENCY CONTACT: If you suspect an overdose, call Poison Control immediately: 1-800-222-1222. For medical emergencies, call 911.

Last Update: March 9, 2026 | Next Review: October 1, 2026 | Data Source: FDA prescribing information, July 2024 safety alert

What is My Tirzepatide Dose? Mounjaro Calculator 2026

How This Tirzepatide Dosage Calculator Answers "What is My Dose?"

💉 FDA-Approved Dosing

📋 2026 Important Updates

📐 2026 Dosing Schedule

FDA-Approved Dosing Table

❓ Frequently Asked Questions About Tirzepatide

⚠️ CRITICAL MEDICAL DISCLAIMER