Mounjaro
PrescriptionWhat is Mounjaro?
Mounjaro is the brand name for tirzepatide, a prescription medication that helps manage type 2 diabetes. The FDA approved it in 2022 for adults with type 2 diabetes to improve blood sugar control. Tirzepatide belongs to a newer class of medications that work differently from older diabetes drugs.
This medication is given as a once-weekly injection under the skin. It comes in a prefilled pen that you use at home. Many people also experience significant weight loss while taking Mounjaro, though weight loss is not its primary FDA-approved purpose.
Mounjaro requires a prescription from your doctor. Your healthcare provider will determine if this medication is right for you based on your medical history and blood sugar levels. Regular monitoring through blood tests helps ensure the medication is working safely and effectively.
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Common uses
- Managing blood sugar levels in adults with type 2 diabetes
- Reducing A1C levels when used with diet and exercise
- Lowering cardiovascular risk factors in people with type 2 diabetes
- Supporting weight management in people with type 2 diabetes
How it works
Mounjaro works by mimicking two natural hormones in your body called GIP and GLP-1. These hormones help control blood sugar after you eat. When you inject Mounjaro, it activates receptors for both of these hormones at the same time. This dual action makes it different from other diabetes medications that only target one hormone.
The medication helps your pancreas release more insulin when your blood sugar is high. It also slows down how quickly food leaves your stomach, which prevents blood sugar spikes after meals. Additionally, it signals to your brain that you feel full, which often leads to eating less and losing weight. These combined effects help lower your A1C, a measure of average blood sugar over three months.
Taking Mounjaro? Monitor your levels.
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Dosage information
Mounjaro comes in six different strengths: 2.5 mg, 5 mg, 7.5 mg, 10 mg, 12.5 mg, and 15 mg. Most people start with 2.5 mg once weekly for four weeks. Your doctor may increase your dose every four weeks based on how well you tolerate it and how your blood sugar responds. The maximum dose is 15 mg once weekly. You can inject Mounjaro at any time of day, with or without food, but try to use it on the same day each week. Your doctor will determine the right dose for your specific needs.
Side effects
- Nausea and vomiting, especially when starting or increasing dose
- Diarrhea or constipation
- Decreased appetite and feeling full quickly
- Stomach pain or discomfort
- Injection site reactions like redness or itching
- Fatigue or tiredness
- Indigestion or heartburn
Serious side effects are rare but require immediate medical attention. These include severe stomach pain that does not go away, which could signal pancreatitis. Mounjaro carries a warning about thyroid tumors seen in animal studies, though this has not been confirmed in humans. Tell your doctor right away if you notice a lump in your neck, trouble swallowing, or a hoarse voice. Low blood sugar is possible if you take Mounjaro with other diabetes medications like insulin or sulfonylureas. Kidney problems can occur, especially if you become dehydrated from vomiting or diarrhea. Allergic reactions, vision changes, and gallbladder problems have also been reported.
Drug interactions
- Insulin or sulfonylureas may increase risk of low blood sugar when combined with Mounjaro
- Oral medications may be absorbed differently because Mounjaro slows stomach emptying
- Birth control pills may be less effective, use backup contraception for 4 weeks after starting
- Warfarin or other blood thinners may need closer monitoring
- Not recommended if you have a personal or family history of medullary thyroid cancer
- Avoid if you have Multiple Endocrine Neoplasia syndrome type 2
- Tell your doctor if you have a history of pancreatitis or severe stomach problems
- May not be safe if you have severe kidney disease or diabetic retinopathy
Blood test monitoring
Regular blood tests are essential while taking Mounjaro to ensure it works safely and effectively. Your doctor will check your fasting glucose and hemoglobin A1C levels to see how well the medication controls your blood sugar. A1C testing typically happens every three months until your levels stabilize. Your healthcare provider may also monitor your kidney function, especially if you experience nausea, vomiting, or diarrhea that could lead to dehydration.
Rite Aid offers blood testing services that measure over 200 biomarkers, including glucose, hemoglobin A1C, and lipid panels. Testing costs $349 per year and includes two comprehensive tests annually. These tests help you and your doctor track your progress and adjust your treatment plan as needed. Monitoring your lipid levels is also important because improving cholesterol is a key benefit for people with type 2 diabetes.
Related blood tests
Taking Mounjaro? Monitor your levels.
- Track how your body responds
- Catch side effects early with blood work
- Share results with your doctor
Frequently asked questions
Rite Aid pharmacy services are returning soon and are currently in lead generation mode. You can sign up now to be notified when prescription services become available. Once services resume, you will be able to fill your Mounjaro prescription at Rite Aid locations. Mounjaro requires a prescription from your healthcare provider and is not available over the counter.
Mounjaro begins working within hours of your first injection, but you may not notice changes right away. Most people see improvements in blood sugar levels within the first few weeks. Your A1C levels typically improve after 12 to 24 weeks of consistent use. Weight loss, if it occurs, usually begins within the first month and continues gradually over several months.
Mounjaro is FDA-approved only for treating type 2 diabetes, not for weight loss alone. However, many people do lose significant weight while taking it. If you want to use this type of medication specifically for weight loss without diabetes, talk to your doctor about other options. Your healthcare provider can help determine what is right for your situation.
If you miss a dose and remember within four days, take it as soon as possible. Then continue with your regular weekly schedule. If more than four days have passed, skip the missed dose and take your next dose on your regularly scheduled day. Never take two doses within three days of each other to make up for a missed dose.
Insurance coverage for Mounjaro varies by plan and often requires prior authorization. Many insurance companies cover it if you have type 2 diabetes and have tried other medications first. The manufacturer offers a savings card that may reduce your copay to $25 per month if you have commercial insurance. Talk to your insurance company and your Rite Aid pharmacist about coverage options.
You need regular monitoring of your glucose and hemoglobin A1C levels to track how well Mounjaro controls your diabetes. Your doctor will likely check your A1C every three months at first. Kidney function tests may also be needed, especially if you experience side effects like vomiting or diarrhea. Rite Aid offers blood testing with over 200 biomarkers for $349 per year, including two comprehensive tests annually.
Drinking alcohol while taking Mounjaro is not strictly forbidden, but it requires caution. Alcohol can lower your blood sugar and increase your risk of hypoglycemia, especially if you take other diabetes medications. Alcohol may also worsen side effects like nausea and stomach upset. Talk to your doctor about safe alcohol consumption based on your overall health and medication regimen.
Store unused Mounjaro pens in the refrigerator between 36°F and 46°F. Do not freeze the medication, and throw it away if it has been frozen. You can keep a pen at room temperature for up to 21 days after removing it from the refrigerator. Keep the pen cap on when not in use to protect it from light.
Seek medical help immediately if you experience severe stomach pain that does not go away, as this could indicate pancreatitis. Watch for signs of low blood sugar like dizziness, confusion, shakiness, or rapid heartbeat. Other serious warnings include vision changes, severe nausea or vomiting leading to dehydration, and allergic reactions like swelling or difficulty breathing. A lump in your neck or trouble swallowing requires prompt evaluation.
No, Mounjaro is not approved for people with type 1 diabetes. It is designed specifically for type 2 diabetes management. People with type 1 diabetes require insulin because their pancreas does not produce any insulin naturally. Mounjaro works by helping your pancreas release insulin, which is not effective for type 1 diabetes.