How to Take Mounjaro tirzepatide: Side Effects, Dosage
How to take Mounjaro (tirzepatide): dosage guidelines, side effects, and important prescribing information for type 2 diabetes treatment.
Not medical advice. Speak with a healthcare professional before using any medication.
Reviewed by:
Updated Feb, 15
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Information sourced from FDA-approved prescribing information and peer-reviewed medical references.
How to Take Mounjaro tirzepatide
How to Take Mounjaro (tirzepatide)
Per FDA-approved prescribing information, Mounjaro is administered as a once-weekly subcutaneous injection. Follow your prescriber's specific instructions for dose and injection technique.
- Per FDA-approved prescribing information, starting dose: Adults begin with 2.5 mg once weekly for 4 weeks.
- Per FDA-approved prescribing information, after 4 weeks: Increase to 5 mg once weekly.
- Per FDA-approved prescribing information, further titration: Your clinician may increase the dose in 5-mg steps every 4 weeks (5 mg → 7.5 mg → 10 mg → 12.5 mg → 15 mg), up to 15 mg once weekly based on tolerability and glycemic response.
Per FDA-approved prescribing information, each dose comes in a single-dose prefilled pen. Use one pen for one injection only.
- Per FDA-approved prescribing information, inject into the abdomen, thigh, or back of the upper arm.
- Rotate injection sites with each weekly dose.
- Inject into clean, intact skin; avoid moles, scars, or irritated areas.
Per FDA-approved prescribing information, if you miss a dose, you may administer it within 4 days (96 hours) of the missed day. If more than 4 days have passed, skip the missed dose and resume on the usual scheduled day. Do not double up.
Per FDA-approved prescribing information, store pens in the refrigerator. They may be kept at room temperature for up to 21 days if needed. Protect from heat and direct light.
Warnings Before Taking Mounjaro (tirzepatide)
BLACK BOX WARNING (Per FDA-approved prescribing information): Tirzepatide causes dose-dependent and treatment-duration-dependent thyroid C-cell tumors in rats. It is unknown whether Mounjaro causes thyroid C-cell tumors, including medullary thyroid carcinoma (MTC), in humans. Mounjaro is contraindicated in patients with a personal or family history of MTC or in patients with Multiple Endocrine Neoplasia syndrome type 2 (MEN 2).
Per FDA-approved prescribing information, do not use if you or a family member has a history of medullary thyroid cancer or MEN2.
Per FDA-approved prescribing information, tell your doctor about past pancreatitis, gallbladder disease, or severe gastrointestinal problems before starting.
Per FDA-approved prescribing information, review all medications with your prescriber; concomitant use with insulin secretagogues or insulin may increase the risk of hypoglycemia.
Per FDA-approved prescribing information, discuss pregnancy plans or breastfeeding with your clinician before use.
Mounjaro tirzepatide Side Effects
Very common
Mild
Nausea
BLACK BOX WARNING: Per FDA-approved prescribing information, Mounjaro carries a boxed warning for thyroid C-cell tumors. Patients should report any neck lump, hoarseness, difficulty swallowing, or shortness of breath to their prescriber immediately.
Per FDA-approved prescribing information, nausea is the most commonly reported adverse effect of tirzepatide, associated with its mechanism of slowing gastric emptying. It is most frequent during dose escalation.
Per FDA-approved prescribing information. If symptoms persist or worsen, consult your healthcare provider.
Normally lasts for:
12–48 hours
Common
Moderate
Vomiting
Per FDA-approved prescribing information, vomiting is a commonly reported adverse effect of tirzepatide, particularly when doses are increased.
Per FDA-approved prescribing information. If symptoms persist or worsen, consult your healthcare provider.
Normally lasts for:
12–24 hours
Common
Moderate
Diarrhea
Per FDA-approved prescribing information, diarrhea is a reported adverse effect of tirzepatide. If persistent or severe, contact your prescriber.
Per FDA-approved prescribing information. If symptoms persist or worsen, consult your healthcare provider.
Normally lasts for:
6–24 hours
Common
Mild
Constipation
Per FDA-approved prescribing information, constipation has been reported with tirzepatide use as a result of reduced gastric motility. Contact your prescriber if symptoms are significant.
Per FDA-approved prescribing information. If symptoms persist or worsen, consult your healthcare provider.
Normally lasts for:
1–3 days
Very common
Mild
Decreased Appetite
Per FDA-approved prescribing information, decreased appetite is a reported adverse effect of tirzepatide. Ensure adequate nutritional intake as directed by your clinician.
Per FDA-approved prescribing information. If symptoms persist or worsen, consult your healthcare provider.
Normally lasts for:
1–3 days
Common
Mild
Injection-Site Reactions
Per FDA-approved prescribing information, mild redness, itching, or tenderness at the injection site have been reported with tirzepatide. Rotating injection sites with each dose may reduce localized reactions.
Per FDA-approved prescribing information. If symptoms persist or worsen, consult your healthcare provider.
Normally lasts for:
1–2 hours
Contact Us for a Personalized Care Plan
Have questions about compounding? Contact Voshell's Pharmacy — we prepare patient-specific medications pursuant to valid prescriptions from your licensed prescriber.
What If You Forgot to Take Mounjaro tirzepatide
If You Forgot to Take Mounjaro (tirzepatide)
Per FDA-approved prescribing information, if you miss your weekly dose:
Per FDA-approved prescribing information, if it has been 4 days or less since the missed dose was due, administer the missed dose as soon as possible, then continue on your regular weekly schedule.
Per FDA-approved prescribing information, if more than 4 days have passed, skip the missed dose and take your next dose on the usual scheduled day.
Per FDA-approved prescribing information, do not administer two doses within 3 days of each other.
Contact your clinician or pharmacist if your dosing schedule becomes uncertain.
What If You Took Too Much Mounjaro tirzepatide
If You Accidentally Took Too Much Mounjaro (tirzepatide)
Contact Poison Control at 1-800-222-1222 right away, or contact your prescribing clinician. Per FDA-approved prescribing information, tirzepatide overdose may cause severe gastrointestinal symptoms and hypoglycemia.
- Do not administer any additional doses until you have spoken with Poison Control or a clinician.
- If symptoms such as severe nausea, vomiting, signs of low blood sugar (shakiness, confusion, sweating), or other serious effects occur, seek emergency medical care immediately.
- Keep this and all medications out of reach of children.
How Much Does Mounjaro tirzepatide Cost
How Much Does Mounjaro (tirzepatide) Cost With Insurance?
With insurance, the cost of Mounjaro varies widely depending on your plan's tier placement, deductible status, and whether manufacturer savings programs apply. Many commercial plans place it on a specialty tier.
Contact your insurer and pharmacist for current formulary information and estimated out-of-pocket costs specific to your plan. Manufacturer patient assistance programs may be available; eligibility requirements apply.
How Much Does Mounjaro tirzepatide Cost without Insurance
Mounjaro (tirzepatide) Cost Without Insurance
Without coverage, Mounjaro is priced as a specialty injectable medication. Cash-pay costs vary by pharmacy location and dose strength.
Discount programs such as GoodRx or similar services may reduce costs at participating pharmacies, though savings vary.
Manufacturer savings programs may be available for eligible patients; eligibility and terms vary.
Contact your local pharmacy for current cash pricing. Prices are subject to change and vary by location.
