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Is Ozempic or Mounjaro better for weight loss?

Mounjaro led to weight loss of 7.7 kg (17 lb) to 11.4 kg (25 lb), on average, compared to 5.9 kg (13 lb) for semaglutide (Ozempic). Of note, Ozempic is now approved in a higher 2 mg dose, and effectiveness compared to Mounjaro with this higher dose may vary. The 2 mg dose was approved by the FDA in March 2022.

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Overview

Both Mounjaro and Ozempic are prescription medicines, used alongside diet and exercise, to help control blood sugar (glucose) levels in adults with type 2 diabetes. Ozempic is also approved to lower the risk of a major cardiovascular event (like a heart attack or stroke) in patients with type 2 diabetes. Mounjaro has not yet received this indication, although studies are ongoing. Mounjaro and Ozempic may also lead to significant weight loss, but are not yet specifically approved by the FDA for this use. However, if weight loss is your only goal, the brand of semaglutide known as Wegovy is approved for weight loss (but not blood sugar control in type 2 diabetes). Gastrointestinal side effects, like nausea and diarrhea, are the most common side effects seen with these drugs. Slowly increasing the dose, as directed by your healthcare provider, may help you more effectively manage the stomach side effects. Both Mounjaro and Ozempic are given as a weekly subcutaneous injection in the abdomen, thigh, or upper arm. You, or a caregiver, can learn to give these injections at home. The Rybelsus brand of semaglutide is also available as an oral tablet for type 2 diabetes. These medicines are expensive if you are fully paying out-of-pocket as no generic option is available on the U.S. market. For example, The cost for one injector pen of Mounjaro is about $1035 and the cost for one pen of Ozempic is about $950. Both pens should last you for one month. Insurance, discount coupons, copay cards, and manufacturers financial assistance may help lower your out-of-pocket costs, if you qualify. Visit here for more information.

Do Mounjaro and Ozempic both lower A1C?

Yes, both drugs can also help you reach your A1C goal, which can prevent diabetes complications like heart and blood vessel disease, nerve damage, kidney failure and vision loss. A1C is a laboratory test that shows the average amount of sugar (glucose) in your blood over the past 2 to 3 months. This can help you and your doctor gauge your long-term control of your diabetes. Your blood sugar levels may start to decline right away, but it can take 2 to 3 months to reach your target A1C goal. A1C is a simple blood test that shows the average amount of sugar (glucose) in your blood over the past 2 to 3 months, giving you an idea of longer-term control of your diabetes. People with type 2 diabetes usually have an A1C blood test twice per year. For most, but not all people, the goal is less than 7%. Your healthcare provider can inform you of your specific A1C goal.

Are Mounjaro and Ozempic in the same drug class?

Mounjaro and Ozempic are both in the class of drugs known as incretin mimetics but have some differences. Mounjaro acts on both GIP and GLP-1 receptors, while Ozempic acts only on GLP-1 receptors; however, both drugs are effective treatments for type 2 diabetes. Mounjaro (tirzepatide), from Eli Lilly, is a dual-acting GIP (glucose-dependent insulinotropic polypeptide) and GLP-1 (glucagon-like peptide-1) receptor agonist. GIP and GLP-1 are both natural incretin hormones. Mounjaro lowers fasting and postprandial glucose concentration, decreases food intake, and reduces body weight in patients with type 2 diabetes mellitus. Ozempic (semaglutide), from Novo Nordisk, is a GLP-1 (glucagon-like peptide-1) receptor agonist. It binds to GLP-1 receptors and stimulates insulin release from the pancreas when needed. It slows down how fast food travels through your digestive tract. This can help you feel fuller for longer, reduce how much you eat, and lead to weight loss. These medicines should not be used together or with other GLP-1 or GIP receptor agonists.

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How are they given?

Both Mounjaro and Ozempic are given as weekly injections under the skin (subcutaneously) in the stomach area (abdomen), thigh or upper arm. You, or a caregiver, can learn to give these injections at home using an injector pen. The recommended starting dose of Mounjaro is 2.5 mg subcutaneously once weekly, increasing to 5 mg once weekly after 4 weeks. The maximum dosage is 15 mg subcutaneously once weekly. The recommended starting dose of Ozempic is 0.25 mg given subcutaneously once weekly. After 4 weeks, the dose is increased to 0.5 mg once weekly. The maximum recommended dose of Ozempic is 2 mg weekly. You will start with low doses to help prevent common stomach side effects like nausea, vomiting, decreased appetite or diarrhea. Other common stomach side effects may include constipation, indigestion, and stomach (abdominal) pain.

Which is more effective - Mounjaro or Ozempic?

Mounjaro was compared to semaglutide (Ozempic) in the 40-week, Phase 3 SURPASS-2 study with over 1,870 participants. Researchers sought to see how these drugs affected A1C reduction. A key secondary endpoint was the amount of weight lost. Neither Mounjaro or Ozempic are approved for weight loss at this time, but in patients with type 2 diabetes, they may lead to some weight reduction. Mounjaro 5 mg, 10 mg, and 15 mg injections were compared to semaglutide (Ozempic) 1 mg injections in adults with type 2 diabetes whose blood sugars were not controlled with 1,500 mg/day of metformin alone. Patients in the study had an A1C of 8.3% and a weight of 94.1 kg (207 lb) at the beginning of the study. Mounjaro reduced the A1C by 2% to 2.3% compared to a 1.9% reduction for participants in the semaglutide (Ozempic) 1 mg group. Mounjaro led to weight loss of 7.7 kg (17 lb) to 11.4 kg (25 lb), on average, compared to 5.9 kg (13 lb) for semaglutide (Ozempic). Of note, Ozempic is now approved in a higher 2 mg dose, and effectiveness compared to Mounjaro with this higher dose may vary. The 2 mg dose was approved by the FDA in March 2022.

How do side effects compare between Mounjaro and Ozempic?

Gastrointestinal (digestive tract) side effects are the most common side effects for both Mounjaro and Ozempic, and incretin mimetics in general. Stomach side effects are most frequent when doses are first initiated. Slowly increasing the dose, as recommended by your healthcare provider, may help to reduce stomach side effects. Rates of side effects cannot be compared outside of direct comparative clinical studies as patient populations, doses and study designs may differ.

Side Effects: Mounjaro

In Mounjaro studies, the most commonly reported side effects, compared to a placebo (an inactive agent) are:

Nausea: 12% to 18% (vs. 3% on placebo)

Diarrhea: 12% to 17% (vs. 9% on placebo)

Decreased appetite: 5% to 11% (vs. 1% on placebo)

Vomiting: 5% to 9% (vs. 2% on placebo)

Constipation: 6% to 7% (vs. 1% on placebo)

Heartburn (dyspepsia): 5% to 8% (vs. 3% on placebo)

Stomach (abdominal) pain: 5% to 6% (vs. 4% on placebo)

Overall, stomach side effects occurred in 37% to 44% of Mounjaro-treated patients (compared to 20% of patients on a placebo). In addition, 3% to 6.6% of patients receiving Mounjaro stopped treatment due to gastrointestinal side effects (like nausea, vomiting, and/or diarrhea) compared to placebo (0.4%). Other reported side effects for Mounjaro included: hypoglycemia, increased heart rate, allergic reactions, injection site reactions, acute gallbladder disease, increases in amylase and lipase.

Side Effects: Ozempic

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The most common side effects with Ozempic are:

Nausea: 16% to 20% (vs. 6% on placebo)

Diarrhea: 8.5% to 9% (vs. 1.9% on placebo)

Vomiting: 5% to 9% (vs. 2.3% on placebo)

Constipation: 3% to 5% (vs. 1.5% on placebo)

Heartburn (dyspepsia): 2.7% to 3.5% (vs. 1.9% on placebo)

Stomach (abdominal) pain: 6% to 7% (vs. 4.6% on placebo)

Overall, stomach side effects occurred in 33% to 36% of Ozempic-treated patients (compared to 15% of patients on a placebo). In addition, 3.1% to 3.8% of patients receiving Ozempic stopped treatment due to gastrointestinal side effects compared to 0.4% of the placebo group. Other reported side effects for Ozempic included: hypoglycemia (low blood sugar), injection site reactions, elevated amylase and lipase, cholelithiasis (gallstones), increases in heart rate, and fatigue, dysgeusia (altered taste), allergic reactions and dizziness. The labeling for both Mounjaro and Ozempic carry Boxed Warnings for possible thyroid tumors, including cancer, which has been seen in animal studies. Do not use Mounjaro if: you or your family has a history of medullary thyroid carcinoma (MTC), or if you have an endocrine system condition called Multiple Endocrine Neoplasia syndrome type 2 (MEN 2).

Discuss this further with your healthcare provider.

These are not all of the side effects or warnings for these drugs. For more information, see:

Comparing Mounjaro vs. Ozempic Prices

Mounjaro cost

The dose for one Mounjaro (tirzepatide) weekly injection ranges between 5 mg and 15 mg. The typical maintenance dose for Mounjaro is 5 mg per week injected subcutaneously (under the skin). Mounjaro injection pens are available in 2.5 mg, 5 mg, 7.5 mg, 10 mg, 12.5 and 15 mg doses. The maximum dosage is 15 mg subcutaneously once weekly. For example, the cost for a 2 mL Mounjaro pen that holds a total of 20 mg and delivers 5 mg per injection is about $1035.00. If you use a 5 mg dose, this pen would last you for one month (one 5 mg dose per week for 4 weeks).

All of the Mounjaro pen strengths are roughly the same price.

Ozempic cost

The dose for one Ozempic (semaglutide) weekly injection ranges between 0.5 mg and 2 mg. The typical maintenance dose for Ozempic is 0.5 to 1 mg injected subcutaneously (under the skin) once a week. Ozempic injection pens are available in 0.5 mg, 1 mg, and 2 mg doses. The maximum recommended dose of Ozempic is 2 mg weekly. For example, the cost for a 1.5 mL Ozempic pen that holds a total of 2 mg and delivers 0.5 mg per injection is about $950.00. If you use a 0.5 mg dose, this pen would last you for one month (one 0.5 mg dose per week for 4 weeks).

All of the Ozempic pen strengths are roughly the same price.

Cost can vary for these medicines, depending upon your pharmacy and location. Your price may depend upon insurance and copays, patient financial assistance or any discount coupons you may have. Using an online coupon may help lower your costs if you are paying cash out-of-pocket for your medicine. Manufacturers may also be able to offer Savings Cards if you qualify. For more information and coupons, visit: This is not all the information you need to know about Mounjaro or Ozempic for safe and effective use and does not take the place of your doctor’s directions. Review the full patient medication guide and discuss this information and any questions you have with your doctor or other health care provider.

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