What Is Mounjaro?
Mounjaro is the brand name for Tirzepatide, a groundbreaking injectable medication developed by Eli Lilly. Originally approved by the U.S. FDA for the treatment of type 2 diabetes, Mounjaro is now gaining global attention for its exceptional weight loss effects—even in individuals without diabetes.
Unlike older medications that target a single hormone, Mounjaro is the first and only dual incretin receptor agonist, meaning it stimulates both GLP-1 and GIP receptors in the body to improve metabolic function.
How Does Mounjaro Work?
Mounjaro mimics the action of two key gut hormones:
1. GLP-1 (Glucagon-like peptide-1)
- Reduces appetite
- Slows down gastric emptying
- Increases feelings of fullness
- Enhances insulin release and lowers blood sugar
2. GIP (Glucose-dependent insulinotropic polypeptide)
- Boosts insulin secretion in response to food
- Enhances fat metabolism
- Works synergistically with GLP-1 for greater weight loss
This dual-action approach results in superior glucose control and unprecedented levels of weight loss when compared to traditional GLP-1 therapies like Semaglutide (Wegovy or Ozempic).
Clinical Results: How Much Weight Can You Lose?
According to SURPASS and SURMOUNT clinical trials, Mounjaro delivered remarkable outcomes:
| Dosage | Average Weight Loss |
|---|---|
| 2.5–5 mg | ~16% of body weight |
| 10 mg | ~21.4% |
| 15 mg | Up to 22.5% |
These results are comparable to those seen with bariatric surgery, making Mounjaro a powerful non-surgical option for people struggling with obesity.
How Is Mounjaro Used?
Mounjaro comes as a pre-filled injection pen and is administered once a week under the skin (subcutaneous injection).
Injection Schedule:
| Week Range | Dosage |
|---|---|
| Weeks 1–4 | 2.5 mg (starter dose) |
| Weeks 5–8 | 5 mg |
| Weeks 9–12 | 7.5 mg |
| Weeks 13–16 | 10 mg |
| Weeks 17–20 | 12.5 mg |
| Week 21+ | 15 mg (maintenance dose) |
Patients inject in one of three areas: the abdomen, thigh, or upper arm. Dosage is gradually increased under physician supervision to minimize side effects.
Side Effects
Like most GLP-1-based medications, Mounjaro may cause:
- Nausea
- Diarrhea or constipation
- Reduced appetite
- Abdominal bloating or discomfort
- Headache or fatigue (less common)
Most side effects improve as the body adapts. Always consult your healthcare provider if symptoms persist or worsen.
Who Is Mounjaro For?
Mounjaro is ideal for:
- Adults with type 2 diabetes who haven’t reached glucose targets with oral medications
- People with obesity (BMI ≥ 30) or BMI ≥ 27 with weight-related comorbidities (e.g. hypertension, high cholesterol)
- Those seeking a non-surgical weight loss option
- Individuals who did not respond well to other GLP-1 treatments (like Semaglutide)
Note: Mounjaro is not recommended for pregnant women, individuals with a personal or family history of medullary thyroid carcinoma, or those with MEN2 syndrome.
Is Mounjaro Available in Thailand?
As of 2025, Mounjaro has been approved by Thailand’s FDA, with clinical availability expected in late 2025. Reputable wellness clinics like:
- Siam Clinic – Phuket
…are preparing to offer Mounjaro under professional medical supervision.
How Much Does Mounjaro Cost?
While official pricing in Thailand has yet to be announced, international pricing suggests:
- THB 10,000–20,000/month depending on dose, provider, and consultation fees
- Some clinics will offer treatment packages including blood tests, lifestyle coaching, and follow-ups
Key Benefits of Mounjaro
- Dual-hormone action = enhanced metabolic effect
- Once-weekly injection = simple & convenient
- Results approaching bariatric surgery—without surgery
- Benefits both blood sugar and body weight
Conclusion
Mounjaro (Tirzepatide) is redefining the future of obesity and type 2 diabetes treatment. Its dual-action mechanism, high success rate in clinical trials, and convenience of use make it one of the most promising medical weight loss tools available today.
As it becomes available in more countries—including Thailand—it represents new hope for those struggling with weight and metabolic health.
