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Choosing the Tirzepatide Dosage for Weight Loss

Dec 14, 2023
Choosing the Tirzepatide Dosage for Weight Loss

Tirzepatide (generic for Mounjaro) is one of the most promising weight-loss medications available. Clinical trials evaluating the best tirzepatide dosage for weight loss have shown that at effective dosages, tirzepatide is very effective in treating obesity. This leads many people to search for “tirzepatide near me” using their favorite browser.

Like semaglutide and liraglutide, tirzepatide is a glucagon-like peptide-1 (GLP-1) receptor agonist. It is also a glucose-dependent insulinotropic peptide (GIP) receptor agonist. Targeting both receptors may make it even more effective at suppressing appetite and cravings, leading to greater weight-loss potential.

Understanding Obesity and Its Impact on Health

Obesity is more than just a cosmetic concern; it is a complex medical condition with serious health implications. It is a leading driver of many diseases, including hypertension, heart disease, diabetes, arthritis, depression, and fatty liver disease.

In the United States, about 42% of all adults live with obesity. Two-thirds of U.S. adults meet the body mass index (BMI) criteria for overweight (>25 kg/m2) or obesity (>30 kg/m2).1,2

Many factors contribute to an increased obesity risk, including genetic predisposition, metabolic factors, living in an obesogenic environment, socioeconomic and sociocultural characteristics, individual behaviors, and lifestyle factors. Obesity as a disease is complex and cannot be explained by just overeating or a lack of willpower.

Until recently, doctors were very limited in their options to treat obesity. Many of the older obesity medications had significant side effects. The weight loss most people achieved while taking these medications did not justify the side effects and risks.

While obesity affects almost half of U.S. adults, only a minority of people receive effective treatment. Finding tirzepatide near me can be difficult due to medication shortages.

A woman using a treadmill

The Emergence of Anti-Obesity Drugs

Anti-obesity medications have been around for decades. Early medications in this class were stimulants and appetite suppressants. They induce weight loss by acting in the brain to suppress appetite and increase metabolic rate. Side effects included irritability, nervousness, a fast heartbeat, and gastrointestinal symptoms.

Other medications that have fewer side effects were developed. These medications have weight loss potentials of 7 to 11 pounds per year. Even a 5% weight loss can have significant health benefits, but many people struggling with obesity need medications that have higher weight-loss potential.

One class of anti-obesity drugs that has shown remarkable effectiveness at promoting weight loss is GLP-1 receptor agonists. These drugs were initially developed to treat type 2 diabetes, but it was observed that they also resulted in weight loss. This led to the creation of specific formulations and doses of these drugs aimed at helping patients lose weight.

Tirzepatide: A New Class of Weight Loss Drug

Tirzepatide is part of a new class of drugs called GLP-1 receptor agonists. In 2022, a phase 3 randomized, controlled clinical trial showed that tirzepatide led to a 20% reduction in body weight over 72 weeks. These results led to its approval by the U.S. Food and Drug Administration for weight loss in individuals with a body mass index (BMI) of 30 or higher—or for those with a BMI of 27 or greater who also had weight-related health conditions such as high cholesterol or hypertension.3

How Does Tirzepatide Work?

Tirzepatide mimics the GLP-1 and GIP hormones that the intestine naturally secretes after a meal. These hormones stimulate insulin release from the pancreas and are very effective in treating type 2 diabetes.

It also reduces appetite by increasing the time it takes for the stomach to empty and for food to move through the gut. This can make you feel full longer. Tirzepatide also interacts with areas in the brain to signal satiety and decrease food cravings. Additionally, tirzepatide has cardiovascular advantages by reducing the risk of damage to your heart and blood vessels from high cholesterol and abnormal lipids.

clinical trials evaluated the best tirzepatide dosage for weight loss

The Efficacy of Tirzepatide in Weight Loss: Evidence from Clinical Trials

Tirzepatide’s safety and effectiveness were tested in two large series of clinical trials. The SURPASS clinical trials evaluated how well tirzepatide would treat type 2 diabetes. The SURMOUNT clinical trials evaluated how well it treated obesity. In both cases, researchers investigated the best tirzepatide dosage for weight loss.

Clinical TrialNumber of participantsLength of trialTirzepatide dosage for weight lossMean weight loss percentage
SURMOUNT 1 (lifestyle counseling, reduced-calorie diet, exercise, no diabetes)2,53972 weeks5 mg, 10 mg, and 15mg Placebo15% 19.5% 21% 3%
SURMOUNT 2 (lifestyle counseling, reduced-calorie diet, exercise, with diabetes)93872 weeks10 mg, 15 mg, Placebo12.8% 14.7% 3.2%
SURMOUNT 3 (lifestyle modifications to lose 5% of body weight followed by tirzepatide treatment)80672 weeks10 mg, 15mg6.9% with lifestyle modifications alone   18.4% with tirzepatide   Total weight loss: 24.3% of body weight
SURMOUNT 4 (tirzepatide followed by tirzepatide or placebo)67088 weeks10mg 15mg21% in the first 36 weeks and an additional 6.7% in the following 12 weeks for a total weight loss of 26.6%. Participants in the placebo group regained 14% of their body weight.

In all SURMOUNT clinical trials, participants taking tirzepatide lost weight. SURMOUNT 1 showed that tirzepatide was effective as a weight-loss medication. SURMOUNT 2 showed that lifestyle counseling is helpful but not essential for weight loss. SURMOUNT 3 required participants to lose at least 5% of their body weight using lifestyle modifications, followed by tirzepatide. SURMOUNT 4 showed that participants who took tirzepatide continued to have weight loss during the follow-up period.

Tirzepatide Safety and Tolerability

As with any medication, tirzepatide has potential side effects. Since tirzepatide mimics gastrointestinal hormones, the most common side effects are nausea, vomiting, diarrhea, and constipation. These side effects are typically mild to moderate in severity. They are more common with dosage increases and tend to improve over time. Therefore, the tirzepatide dosage for weight loss starts low and increases as needed and as tolerated.

The most common side effects reported in the SURMOUNT clinical trials include:

  • Nausea (18%)
  • Diarrhea (17%)
  • Vomiting (9%)
  • Constipation (7%)
  • Indigestion (5%)
  • Stomach pain (5%)

Potential serious adverse effects associated with tirzepatide and other GLP-1s include:4

  • Diabetic retinopathy in people with type 2 diabetes
  • Gallbladder disease
  • Acute kidney injury
  • Hypersensitivity or allergic reactions
  • Thyroid cancer
  • Injection site reactions
  • Faster heart rate
  • Low blood sugar
  • Suicidal behavior or ideation
  • Inflammation of the pancreas
  • Intestinal blockage

Tirzepatide dosage for weight loss and administration method

Tirzepatide is administered as a weekly subcutaneous (under the skin) injection. The tirzepatide dosage for weight loss is gradually increased until it reaches the maintenance dose. Tirzepatide can be administered any time during the day, with or without meals. It should be injected into fat just under the skin in the abdomen, thigh, or upper arm. Rotate the injection sites with each dose. 

Week Tirzepatide Dosage for Weight Loss
Weeks 1-42.5 mg Tirzepatide may cause severe hypoglycemia if taken with another GLP-1 or insulin. If you miss a dose, inject tirzepatide as soon as possible within four days. If more than four days have passed, skip the missed dose.  Contact your doctor if you have any questions about how tirzepatide should be dosed or administered.
Weeks 5-85.0 mg
If needed, tirzepatide dosage for weight loss: 
Weeks 9-127.5 mg
Weeks 13-1610.0 mg
Weeks 17-2012.5 mg
Weeks 21 and after15.0 mg (maximum dose)

The Future of Tirzepatide and Weight Loss

The results of the SURMOUNT clinical trials suggest that tirzepatide is a very effective weight-loss medication. However, it is essential to remember that obesity is a chronic condition that requires long-term management. While drugs like tirzepatide can provide significant help, they should be used as part of a comprehensive treatment plan that includes lifestyle modifications. If tirzepatide sounds like an ideal addition to your weight loss plan, search tirzepatide near me and navigate to the Invigor Medical website to learn about your treatment options.

Further studies are needed to assess the long-term risks and benefits associated with these drugs, especially considering their potential for lifelong use.

Tirzepatide dosage for weight loss: Conclusion

In conclusion, tirzepatide represents a significant breakthrough in the field of obesity treatment. Its dual-action mechanism offers a novel approach to weight loss, and its effectiveness and safety in clinical trials are promising. However, like all medications, it should only be prescribed after carefully weighing its risks and benefits, and it should be part of a comprehensive treatment plan that includes lifestyle modifications. The ideal tirzepatide dosage for weight loss can be tricky to determine. Work with your Invigor Medical treatment specialist to determine the best tirzepatide dosage for weight loss for you.

Get started today with Tirzepatide injections from Invigor Medical.

While we strive to always provide accurate, current, and safe advice in all of our articles and guides, it’s important to stress that they are no substitute for medical advice from a doctor or healthcare provider. You should always consult a practicing professional who can diagnose your specific case. The content we’ve included in this guide is merely meant to be informational and does not constitute medical advice.

Choosing the Tirzepatide Dosage for Weight Loss

Leann Poston, M.D.

Dr. Leann Poston is a licensed physician in the state of Ohio who holds an M.B.A. and an M. Ed. She is a full-time medical communications writer and educator who writes and researches for Invigor Medical. Dr. Poston lives in the Midwest with her family. She enjoys traveling and hiking. She is an avid technology aficionado and loves trying new things.



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