What is Mounjaro?
Mounjaro (tirzepatide) is used for type 2 diabetes in adults to lower blood sugar levels (blood glucose) and A1C levels. Mounjaro is a once-weekly injection that should be used with diet and exercise. Clinical trials for a 15 mg dose of Mounjaro (tirzepatide) for weight loss showed patients lost a mean of 20.9% of their body weight compared to 3.1% for placebo over 72 weeks. Zepbound is the name of the weight loss version of Mounjaro, they both contain the same active ingredient (tirzepatide), Mounjaro is FDA-approved for type 2 diabetes and Zepbound is FDA-approved to help with weight loss.
Mounjaro is the first GIP and GLP-1 receptor agonist, which works on the glucose-dependent insulinotropic polypeptide (GIP) receptors and the glucagon-like peptide-1 (GLP-1) receptors.
Mounjaro works to lower blood sugar by helping the pancreas release more insulin, lowering the amount of sugar your liver makes, and slowing the rate food passes through your body, making you feel full longer. It does this by activating the two receptors, GIP and GLP-1, which are natural incretin hormones that help regulate blood sugar levels.
Mounjaro injection became an FDA-approved medicine on May 13, 2022, to improve blood sugar (glucose) levels in adults with type 2 diabetes mellitus when used together with diet and exercise. Mounjaro is not for use in people with type 1 diabetes. It is not known if this medicine can be used in people who have had pancreatitis.
Yes, Mounjaro's active ingredient tirzepatide is approved for weight loss, but it is under the brand name Zepbound. Zepbound has the same active ingredient as Mounjaro, and both are made by Eli Lilly and Company.
The Mounjaro brand is not approved for weight loss by the FDA. Mounjaro is an FDA-approved medicine used to improve blood sugar (glucose) levels in adults with type 2 diabetes mellitus when used together with diet and exercise.
Mounjaro’s active ingredient tirzepatide was used in the Phase 3 SURMOUNT-1 72-week weight loss clinical trials. The mean tirzepatide weight loss was 15% for the 5mg dose, 19.5% for the 10mg dose, 20.9% for the 15mg dose, and 3.1% for placebo. The trial included patients who were overweight, obese, and had a weight-related health issue but excluded patients with diabetes.
The most common Mounjaro side effects include nausea, diarrhea, decreased appetite, vomiting, constipation, dyspepsia, and abdominal pain, which affects 5% or more patients.
Stop using this medicine and get emergency medical help if you have:
Call your doctor at once if you have:
You should not use this medicine if you:
Tell your doctor if you have ever had:
Tell your healthcare provider if you are pregnant, you become pregnant, or plan to become pregnant while using this medicine. It is not known if this medicine will harm your unborn baby.
This medicine can make birth control pills less effective. Ask your doctor about other birth control options such as an injection, implant, skin patch, vaginal ring, condom, diaphragm, cervical cap, or contraceptive sponge. If you take birth control pills, you may need to use additional birth control methods for 4 weeks after starting this medicine, and for 4 weeks each time, the dose is raised.
Tell your healthcare provider if you are breastfeeding or plan to breastfeed while using this medicine. It is not known whether this tirzepatide passes into your breast milk. Talk to your healthcare provider about the best way to feed your baby while using this medicine.
You should follow the directions on your prescription label carefully and ask your pharmacist or doctor to explain any part you do not understand. It is important to use this medicine exactly as directed. Do not take more or less of it or more often than your doctor prescribes.
Mounjaro is a pre-filled pen injected under the skin (subcutaneously).
Mounjaro is usually given:
Your doctor will usually start you on a low dose, which will be gradually increased, but not more than once every 4 weeks.
You may change the day of the week you use this medicine as long as there is at least three days between doses.
You may give insulin in the same area as this medicine, but they should not be given right next to each other. Do not mix insulin and Mounjaro in the same injection.
Mounjaro controls type 2 diabetes but does not cure it. It may take four weeks or longer before you see the full benefit of this medicine. Continue to take this medicine even if you feel well. Do not stop taking this medicine without talking to your doctor.
Initial dose: 2.5 mg under the skin (subcutaneously) once a week.
After 4 weeks: The dosage should be increased to 5 mg subcutaneously once a week.
If additional glycemic control is needed: The dosage should be increased in 2.5 mg increments after at least 4 weeks on the current dose.
Maximum dose: 15 mg subcutaneously once a week.
Comments: The 2.5 mg dosage is for starting of treatment and is not intended for glycemic control. The day of weekly administration can be changed, if necessary, as long as the time between the 2 doses is at least 3 days (72 hours).
There have been issues with Mounjaro availability with drug shortages for some strengths due to increase for the demand.
Take the missed dose as soon as you remember it within 4 days after the missed dose. However, if more than 4 days have passed, skip the missed dose and continue your regular dosing schedule. Do not inject two doses within 3 days of each other.
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