💉 Mounjaro (Tirzepatide Injection) is a once-weekly injectable medication used under expert guidance to support systematic weight management. Its active ingredient, Tirzepatide, works by targeting hormones related to satiety and appetite.
✨ Key benefits of Mounjaro:
Naturally reduces appetite
Increases feelings of fullness
Supports balanced eating behavior
🖊️ Comes as a convenient self-injecting pen used once a week, ideal for those planning long-term weight and lifestyle management. Clinical data shows it can support weight loss of up to approximately 22.5% of starting body weight*, though individual results may vary.
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What is Mounjaro?
Mounjaro is an injectable medicine for weight management. Its active ingredient, Tirzepatide, is a dual GIP/GLP-1 receptor agonist given as a subcutaneous injection, made by Eli Lilly. It works through appetite- and satiety-related hormones to reduce hunger and prolong fullness. Supplied as a once-weekly self-injection pen; it should be used under medical supervision.
🛒 Once-weekly injection pen · authentic · 24-hour dispatch from Intimo Life — consult a doctor or pharmacist before use.
Product Description
Weight loss injection pens represent the latest medical innovation for overweight and obesity management. Mounjaro is the newest weight loss injection pen containing Tirzepatide, a Dual GIP/GLP-1 Receptor Agonist subcutaneous injection manufactured by Eli Lilly.
📊 Key Statistics
Mounjaro is the world's first medication acting through dual receptors simultaneously (GIP + GLP-1 Agonist), achieving greater weight loss than GLP-1-only medications
SURMOUNT-1 study — Participants using Mounjaro 15 mg achieved an average weight loss of 22.5% of body weight, the highest ever recorded for injectable weight loss medication
Mechanism of action — Activates both GIP + GLP-1 receptors to reduce appetite, increase satiety, slow gastric emptying, increase insulin secretion, and reduce glucagon
See other weight loss medications in the Weight Loss collection
🏭 Mounjaro is manufactured by Eli Lilly, a leading global pharmaceutical company from the United States. FDA approved for type 2 diabetes and weight management in patients with elevated BMI.
⚠️ Weight loss injection pens must be used under medical supervision. Not suitable for everyone — eligibility assessment is required before use.
Medically reviewed by
Supatcheree A., Pharmacist | Sources: Eli Lilly PIL, SURMOUNT-1 (NEJM), FDA, EMA
Last reviewed: 2026-02-17
About Mounjaro
What is Mounjaro?
Mounjaro is a subcutaneous weight loss injection pen containing Tirzepatide as its active ingredient. It belongs to the Dual GIP/GLP-1 Receptor Agonist drug class — the first and only medication acting through two receptor types simultaneously. Manufactured by Eli Lilly.
Tirzepatide works by activating both GIP and GLP-1 receptors simultaneously, producing multiple effects:
Reduces appetite — Acts on hunger control centres in the brain
Increases satiety — Prolongs feeling of fullness, reducing food intake
Slows gastric emptying — Food stays in the stomach longer
Increases insulin secretion and reduces glucagon — Helps control blood sugar
The dual-receptor mechanism makes Mounjaro more effective for weight loss than GLP-1-only medications such as Semaglutide.
What is Mounjaro used for?
Type 2 Diabetes: Mounjaro is approved for treating type 2 diabetes, providing excellent blood sugar control with greater HbA1c reduction than many other diabetes medications.
Weight Management / Obesity: For individuals with BMI ≥30 (obesity) or BMI ≥27 with comorbidities such as hypertension, dyslipidaemia, diabetes, or obstructive sleep apnoea.
Mounjaro's key advantage: The SURMOUNT-1 study showed Mounjaro 15 mg achieved an average weight loss of 22.5% of body weight (approximately 24 kg for a 107 kg person) — the highest weight loss achieved by any currently available injectable weight loss medication.
How to Use Mounjaro / Dosage
How to inject: Subcutaneous injection once weekly on the same day each week. Can be injected in the abdomen, thigh, or upper arm. Rotate injection sites each time.
Dose titration:
Start at 2.5 mg/week for 4 weeks (starting dose, not therapeutic dose)
Increase to 5 mg/week
Increase every 4 weeks based on response: 7.5 mg → 10 mg → 12.5 mg → maximum 15 mg/week
Important: Must titrate gradually — do not skip doses as this increases GI side effects. Can be injected any day of the week, independent of meals.
If you miss a dose: Inject as soon as you remember. If more than 4 days late, skip and inject on the next scheduled day.
Side Effects of Mounjaro
Common side effects:
Nausea — most common, especially when starting and during dose increases; usually improves with continued use
Vomiting
Diarrhoea
Constipation
Abdominal pain, bloating
Decreased appetite (part of the weight loss mechanism)
Serious side effects (stop taking and seek medical attention):
Pancreatitis — Severe abdominal pain radiating to the back with severe nausea/vomiting
Gastroparesis — Stomach paralysis with food not moving through
Severe allergic reaction — Swelling of face, tongue, throat, difficulty breathing
Gallbladder problems
Hypoglycaemia — When used with other diabetes medications
Contraindications & Precautions
Do not use:
Personal or family history of Medullary Thyroid Carcinoma (MTC) or Multiple Endocrine Neoplasia syndrome type 2 (MEN2)
History of pancreatitis
Pregnant or planning pregnancy — must stop at least 2 months before conception
Allergy to Tirzepatide
Use with caution:
Kidney disease — risk of dehydration from vomiting/diarrhoea
Gastroparesis or severe gastrointestinal conditions
Concurrent use of other diabetes medications — monitor for hypoglycaemia
Breastfeeding — insufficient safety data
History of psychiatric disorders or suicidal ideation — monitoring required
How Does Mounjaro Compare to Other Weight Loss Injections?
Mounjaro vs. Wegovy (Semaglutide): Both are once-weekly weight loss injections. Mounjaro acts through dual receptors (GIP+GLP-1), while Wegovy acts through GLP-1 only. Studies show Mounjaro achieves greater weight loss (22.5% vs 15–17%), though it may be more expensive.
Mounjaro vs. Ozempic (Semaglutide): Ozempic contains the same active ingredient as Wegovy (Semaglutide) but is primarily approved for diabetes at a lower maximum dose. It achieves less weight loss than Mounjaro's dual-receptor mechanism.
How Long Does Mounjaro Take to Work?
Tirzepatide has a half-life of approximately 5 days, allowing once-weekly dosing. Peak blood levels are reached within 8–72 hours of injection.
For weight loss:
Initial results noticeable within 4–8 weeks
Weight loss continues throughout 72 weeks (per SURMOUNT-1 study)
Maximum weight loss typically achieved at 60–72 weeks
For blood sugar control: HbA1c reduction begins within 4–8 weeks and continues up to 40 weeks.
Weight loss requires time and patience, combined with dietary changes and exercise.
Can Mounjaro Be Taken with Other Medications?
Medications requiring caution:
Sulfonylureas or Insulin — Combined with Mounjaro increases hypoglycaemia risk; doctor may need to reduce these medications
Oral contraceptives — Mounjaro may reduce absorption due to delayed gastric emptying; consider alternative contraception or take 1 hour before Mounjaro injection
Medications requiring rapid absorption — Mounjaro may reduce absorption of some medications
Safe combinations: Metformin can be safely used with Mounjaro and is commonly combined in diabetic patients.
Where Can I Buy Mounjaro?
Mounjaro must be dispensed by a doctor or pharmacist. You can order online from Intimo Life.
Can I buy Mounjaro online?
Yes. Order through Intimo Life — select the product, consult with a licensed pharmacist online, and receive your medication at home.
Do I need a prescription?
A doctor's prescription is not required, but the medication must be dispensed by a licensed pharmacist. At Intimo Life, our pharmacist will review your symptoms and health history to confirm suitability before shipping.
How does Intimo Life ship orders?
We deliver nationwide in Thailand with discreet packaging — no product names on the outside. Temperature-sensitive products are shipped with cold chain packaging.
⚠️ Disclaimer
The information on this page is for general informational purposes only and is not intended to replace professional medical advice, diagnosis, or treatment from a qualified doctor or pharmacist. If you have any questions about your symptoms or medication, always consult a doctor or pharmacist first.
Both are once-weekly weight loss injection pens but with different mechanisms. Mounjaro (Tirzepatide) acts through dual receptors (GIP+GLP-1), while Wegovy (Semaglutide) acts through GLP-1 only. Studies show Mounjaro achieves greater weight loss (average 22.5% vs 15–17%). Mounjaro is by Eli Lilly; Wegovy is by Novo Nordisk.
In the SURMOUNT-1 study, participants on Mounjaro 15 mg lost an average of 22.5% of body weight (approximately 24 kg for those starting at 107 kg) over 72 weeks. Results vary by individual depending on dose, dietary changes, and exercise.
Nausea is the most common side effect, especially when starting and during dose increases. To alleviate: eat smaller, more frequent meals, avoid fatty foods, avoid lying down after eating, stay hydrated, and titrate doses gradually. Symptoms usually improve as your body adjusts within 2–4 weeks.
Inject subcutaneously in the abdomen (5 cm from the navel), front of the thigh, or back of the upper arm. Rotate injection sites each time — never inject in the same spot. Avoid areas with scars, bruises, or abnormal skin. Mounjaro's pen is designed for easy use with a single button press.
Studies show that some weight regain tends to occur after stopping Mounjaro, as the appetite control mechanism ceases. However, those who seriously adopt dietary and exercise changes during treatment tend to maintain weight better. Your doctor may consider long-term continuation if needed.
Mounjaro pricing varies by dose (2.5 mg to 15 mg). Check current prices on the Intimo Life product page. Mounjaro is a premium-priced medication as a cutting-edge innovation with no generic available yet. Consider long-term costs before starting, as treatment may continue for many months.
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