Mounjaro Singapore

Tirzepatide (Dual GLP-1 & GIP Weekly Injections) for Weight Loss in Singapore

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Ultimate Guide to Doctor-Prescribed

Weight Loss Medications in Singapore

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For patients who have tried diet, exercise, and even single-pathway GLP-1 injections without sufficient results, the newest option now available in Singapore is tirzepatide, a dual GLP-1 and GIP weekly injection.

By targeting two metabolic pathways instead of one, tirzepatide delivers stronger appetite suppression, improved blood sugar control, and greater weight reduction compared to older GLP-1 only medications.

Clinical studies have shown that patients may achieve 15–20% total body weight loss, making it an effective prescription weight loss treatment when prescribed and monitored under doctor supervision.

Summary

Mounjaro is a once-weekly prescription injection containing tirzepatide, used in Singapore for medical weight management and type 2 diabetes treatment. It is a dual-hormone GLP-1 + GIP receptor agonist, making it more advanced than older GLP-1-only medications like semaglutide (Ozempic/Wegovy). By acting on two metabolic pathways, it provides stronger appetite suppression, improved blood sugar control, and greater overall weight loss results.

  • Mounjaro contains tirzepatide (dual GLP-1 + GIP action). It targets two hormone pathways involved in appetite, satiety, and metabolism.
  • Stronger than single-pathway GLP-1 drugs. Dual action leads to greater appetite control and higher average weight loss compared to semaglutide-based treatments.
  • Once-weekly injection. Administered via a prefilled pen for convenience and consistent dosing.
  • Originally developed for diabetes. Now widely used under medical supervision for obesity and weight-related conditions.
  • Clinical results show high effectiveness. Studies (SURMOUNT trials) report ~15–20% body weight loss over ~72 weeks in suitable patients.
  • Dose is gradually increased. Patients start at a low dose and slowly titrate up to improve tolerance and reduce side effects.
  • Requires strict medical supervision. Dosing, side effects, and suitability must be monitored by a doctor.

What Is Tirzepatide (Dual GLP-1 & GIP Weekly Injection)?

Tirzepatide is the latest prescription weight loss medication available in Singapore. Unlike older treatments that act only on the GLP-1 pathway, tirzepatide is a dual GLP-1 and GIP receptor agonist. This means it works on two hormone pathways simultaneously, providing stronger appetite regulation, improved satiety, and enhanced metabolic control.

Originally developed for type 2 diabetes, tirzepatide is now used under medical supervision for patients struggling with obesity or weight-related conditions. Clinical trials have shown that this dual-action mechanism helps patients achieve greater and more sustained weight reduction compared to single-pathway GLP-1 medications such as semaglutide.

By slowing gastric emptying, reducing food cravings, and improving insulin sensitivity, tirzepatide provides comprehensive support for weight loss. It is prescribed only by licensed doctors in Singapore, following a full medical consultation and assessment of patient suitability.

How Tirzepatide Works for Weight Loss

Tirzepatide works differently from older single-pathway treatments by targeting both the GLP-1 and GIP receptors. This dual mechanism provides stronger appetite control, enhanced feelings of fullness, and improvements in blood sugar regulation. By combining these effects, tirzepatide supports meaningful and sustainable weight reduction under doctor supervision.
The GLP-1 pathway slows gastric emptying and reduces appetite signals in the brain. This helps patients feel full after smaller meals, leading to reduced calorie intake over time.
Tirzepatide also activates the GIP pathway, which works alongside GLP-1 to further improve insulin sensitivity and appetite control. This dual action is what sets tirzepatide apart from single-pathway GLP-1 injections such as semaglutide.
In addition to weight loss, tirzepatide has been shown to improve blood sugar levels, lower cholesterol, and reduce cardiovascular risk factors. These benefits make it a valuable option for patients who not only want to lose weight but also improve long-term metabolic health.

Clinical Studies on Tirzepatide for Weight Management

The effectiveness of tirzepatide for weight loss has been demonstrated in large international clinical trials. These studies show that dual GLP-1 and GIP injections can achieve greater weight reduction compared to older single-pathway GLP-1 treatments such as semaglutide.
The SURMOUNT-1 trial studied tirzepatide in adults with obesity or overweight and weight-related conditions. At higher doses, participants achieved an average weight loss of 15–20% of their total body weight over 72 weeks. This outcome is stronger than the 10–15% reduction typically observed in semaglutide STEP trials.
The SURMOUNT-2 trial evaluated tirzepatide in patients who were overweight or obese and also had type 2 diabetes. Results showed an average weight loss of around 13–15% over 72 weeks. While slightly lower than SURMOUNT-1, these findings are still significant, as weight loss is often harder to achieve in patients with diabetes.
Semaglutide, a GLP-1 only treatment, was studied in the STEP trials and achieved average weight reductions of 10–15% over 68 weeks at higher doses (up to 2.4 mg weekly). Tirzepatide’s dual action consistently showed higher weight loss percentages, suggesting stronger effectiveness for patients who are suitable candidates.
In addition to reducing body weight, patients treated with tirzepatide in the SURMOUNT studies experienced improvements in blood sugar control, blood pressure, and cholesterol levels. These metabolic benefits make tirzepatide an important option for long-term health improvement alongside weight reduction.
Research continues to monitor tirzepatide’s long-term impact on cardiovascular outcomes and metabolic health. Current evidence indicates that consistent use under medical supervision provides sustainable weight loss with added health benefits over time.

Who Is Suitable for Tirzepatide Treatment in Singapore

Tirzepatide is prescribed in Singapore for patients who meet specific medical criteria and have not achieved sufficient results with lifestyle changes alone. A full consultation with Dr Edwin and our doctors is required to determine if this treatment is safe and appropriate.

Tirzepatide is generally considered for patients with a body mass index (BMI) of 30 or higher. It may also be prescribed for patients with a BMI of 27 or higher if they have weight-related conditions such as type 2 diabetes, high blood pressure, or elevated cholesterol. These guidelines are consistent with international standards for prescription weight loss medications.

This treatment is often recommended for patients who require greater weight reduction than what single-pathway GLP-1 injections typically achieve. It may be suitable for individuals who:

  • Struggle with appetite control despite diet and exercise.
  • Have obesity-related health conditions such as diabetes or hypertension.
  • Have previously used semaglutide but require stronger results.

Tirzepatide is not suitable for everyone. It should not be used by:

  • Patients with a personal or family history of medullary thyroid carcinoma.
  • Patients with multiple endocrine neoplasia syndrome type 2 (MEN2).
  • Women who are pregnant, breastfeeding, or planning pregnancy.
  • Patients with severe gastrointestinal conditions such as gastroparesis.

Each patient undergoes a full consultation before starting tirzepatide. Dr Edwin and our doctors review medical history, BMI, lifestyle, and treatment goals to ensure suitability. Ongoing monitoring helps adjust doses, manage side effects, and track progress for safe and effective outcomes.

Tirzepatide Dosage and Treatment Plan in Singapore

Tirzepatide is administered as a once-weekly injection, with doses gradually increased to improve tolerability and effectiveness. The exact treatment plan depends on individual needs, response to medication, and doctor supervision.
Tirzepatide is given once a week using a pre-filled injection pen. Patients can administer it at home after receiving instructions from their doctor. Consistency in the weekly schedule is important to maintain steady effectiveness.
Treatment usually begins with a low starting dose of 2.5 mg per week. The dose is then increased step by step (5 mg, 7.5 mg, 10 mg, up to a maximum of 15 mg) depending on tolerance and treatment goals. This slow escalation helps reduce digestive side effects and allows the body to adjust.
Self-adjusting doses or sourcing tirzepatide without medical guidance can be unsafe. At Edwin Lim Medical Aesthetic Clinic, Dr Edwin and our doctors customise the treatment plan for each patient, monitor side effects, and adjust dosing when necessary. Regular follow-up appointments ensure that treatment is both safe and effective.

Tirzepatide Weight Loss Results in Singapore

Patients in Singapore often want to know how much weight loss they can expect and how quickly results may appear with tirzepatide. While outcomes vary between individuals, clinical studies and real-world use provide clear guidance on typical progress.
  • At 3 months, most patients begin to notice appetite suppression, smaller portion sizes, and early weight reduction.
  • At 6 months, clinical studies such as SURMOUNT-1 report an average of 7–12% body weight loss depending on the dose used.
  • At 12 months, patients may achieve 15–20% total body weight loss, particularly with higher tirzepatide doses and consistent lifestyle support.
Beyond weight reduction, tirzepatide has been shown to improve blood sugar regulation, cholesterol levels, and blood pressure. These benefits are especially valuable for patients with type 2 diabetes or cardiovascular risk factors.
Many patients also experience higher energy levels, reduced food cravings, and improved quality of life. While the number on the scale is important, Dr Edwin and our doctors emphasise that long-term success is also defined by better overall health, confidence, and sustainable lifestyle changes.

Side Effects and Safety Considerations of Tirzepatide in Singapore

Like all prescription medications, tirzepatide may cause side effects. Most are mild and temporary, especially when the dose is increased gradually under doctor supervision. Understanding what to expect helps patients prepare for treatment and stay safe throughout their weight loss journey.
The most frequently reported effects include nausea, bloating, diarrhoea, constipation, and stomach discomfort. These occur because tirzepatide slows gastric emptying and alters appetite signals. Symptoms are usually mild and tend to improve as the body adapts over time.
Some patients may notice mild redness, swelling, or tenderness at the injection site. These reactions are generally short-lived and can be minimised by rotating injection areas and using proper technique.
Although uncommon, tirzepatide has been associated with rare but more serious risks. These may include pancreatitis, gallbladder disease, or thyroid-related conditions in patients with certain predispositions. For this reason, tirzepatide is not prescribed to patients with a personal or family history of medullary thyroid carcinoma or multiple endocrine neoplasia type 2 (MEN2).
Tirzepatide should always be used under medical supervision. At Edwin Lim Medical Aesthetic Clinic, Dr Edwin and our doctors monitor patient progress closely, adjusting doses when needed and managing any side effects promptly. This ensures that treatment remains both safe and effective.

Cost of Tirzepatide in Singapore

The cost of tirzepatide in Singapore depends on the prescribed dose and how long each pen lasts. At Edwin Lim Medical Aesthetic Clinic, the 10 mg pen is currently priced at $898 per pen (before prevailing government taxes), providing a total of 40 mg of medication.
How Long Does One Pen Last?

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The duration of each pen varies depending on the weekly dose:

  • At 2.5 mg per week, one pen can last up to 4 months.
  • At 5 mg per week, one pen lasts 2 months.
  • At 10 mg per week, one pen lasts 1 month.

This means the monthly cost of tirzepatide may range significantly depending on the prescribed dose and treatment plan.

Factors That Affect the Overall Cost

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Several factors determine the overall cost of treatment, including:

  • The weekly dose prescribed by your doctor.
  • The duration of treatment before results are achieved.
  • The need for ongoing maintenance to sustain results.
Why Doctor Supervision Matters for Cost-Effectiveness

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Tirzepatide should only be prescribed by a licensed doctor. Proper medical supervision ensures that patients are started on the correct dose, escalated gradually, and monitored for safety. This careful approach not only improves tolerability but also helps patients get the most value out of each pen.

Tirzepatide and Other Prescription Weight Loss Medications in Singapore

Patients often want to understand how tirzepatide fits among other available treatments. In Singapore, prescription options include oral GLP-1 tablets, daily GLP-1 injections, weekly semaglutide injections, and the newer dual GLP-1/GIP weekly injection tirzepatide. Each has unique features, and the choice depends on individual goals, medical history, and doctor guidance.
Semaglutide is a single-pathway GLP-1 injection that has been widely used for both diabetes and weight management. Clinical trials show average reductions of 10–15% in body weight at higher doses.
Tirzepatide, with its dual GLP-1 and GIP action, has demonstrated greater reductions of 15–20% in trials such as SURMOUNT-1, making it suitable for patients who require stronger outcomes.
Oral semaglutide is taken once daily in tablet form. While convenient for patients who prefer to avoid injections, clinical studies such as the PIONEER trials show average reductions of 4–6 kg over six months — generally less than injectable results. Oral therapy may still be a good choice for needle-averse patients or those with milder weight loss goals.
Some patients who begin with semaglutide may later be switched to tirzepatide if they need additional appetite suppression or greater weight reduction. Others may remain on semaglutide if it meets their goals effectively. These decisions are made by doctors based on medical suitability and progress.
Oral semaglutide, daily injections, weekly semaglutide, and tirzepatide each have a role in medical weight management. The most suitable choice depends on your health profile, BMI, and treatment goals. Dr Edwin and our doctors provide individualised consultations to recommend the safest and most effective approach for each patient.

Long-Term Use and Maintenance After Tirzepatide Treatment

One of the most common questions patients ask in Singapore is whether tirzepatide must be taken for life. The answer depends on each patient’s goals, progress, and long-term health needs. While clinical studies show strong results with consistent use, long-term success also relies on sustainable lifestyle habits and personalised medical planning.
Most patients use tirzepatide for several months to a year, depending on their weight loss goals and medical profile. Clinical studies such as SURMOUNT-1 and SURMOUNT-2 achieved their best results with continuous use for more than 12 months. Some patients may continue beyond this if they benefit from appetite control and metabolic improvements.
After stopping treatment, appetite and metabolism gradually return to baseline. This means that some patients may experience weight regain if healthy habits are not maintained. However, weight regain is not inevitable. Patients who continue with good nutrition, exercise, and doctor follow-up often maintain much of their progress.
At Edwin Lim Medical Aesthetic Clinic, Dr Edwin and our doctors create structured maintenance plans for each patient. These may include gradual dose tapering, nutrition and exercise strategies, and scheduled follow-ups to track progress. This approach ensures that patients maintain their results and benefit from long-term health improvements beyond just weight reduction.

Typical Patient Experience With Tirzepatide for Weight Loss in Singapore

Patients considering tirzepatide often want to understand what the treatment journey is like. While results vary, clinical studies and patient experiences in Singapore provide a clear idea of what to expect when tirzepatide is prescribed under doctor supervision.
During the first weeks of treatment, most patients notice a significant reduction in appetite and smaller portion sizes. Many feel fuller after meals and experience fewer food cravings. Some may also develop mild digestive side effects such as nausea, bloating, or stomach discomfort, which typically improve as the body adapts and as doses are gradually increased.
By three months, early weight reduction is usually measurable on the scale and noticeable in clothing fit. By six months, data from the SURMOUNT-1 trial shows that patients may lose an average of 7–12% of their total body weight depending on dosage. Energy levels and stamina often improve, and maintaining healthier eating habits becomes easier.
With consistent use and medical support, patients may achieve 15–20% total body weight loss after 12 months of tirzepatide treatment. These results, demonstrated in clinical trials, highlight the potential of dual GLP-1 and GIP therapy for meaningful and sustained weight reduction. In addition to weight loss, many patients also benefit from improvements in blood sugar regulation, blood pressure, and cholesterol levels.
Throughout the treatment journey, regular follow-up consultations with Dr Edwin and our doctors are essential. These visits allow for dose adjustments, side effect management, and personalised lifestyle guidance. Close medical monitoring helps patients achieve safe, steady, and long-lasting results.

Lifestyle Support While on Tirzepatide in Singapore

While tirzepatide provides powerful appetite regulation and weight reduction, the best results come when treatment is combined with healthy lifestyle changes. In Singapore, Dr Edwin and our doctors emphasise that nutrition, exercise, sleep, and stress management all play a role in supporting long-term weight loss success.
Nutrition and Portion Control

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Tirzepatide makes it easier for patients to control appetite and reduce portion sizes. To maximise results, our doctors recommend balanced meals that include lean protein, fibre, and healthy fats, while limiting excess sugar and processed foods. This helps sustain energy levels and supports steady weight loss.
Exercise and Physical Activity

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Physical activity helps preserve muscle mass and maintain metabolism during weight reduction. Even moderate activities such as brisk walking, cycling, or strength training can enhance tirzepatide’s effects. Patients who exercise regularly often see better improvements in body composition and fitness.
Sleep and Stress Management

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Poor sleep and high stress levels can interfere with weight loss by increasing cravings and disrupting hormone balance. Addressing these factors is an important part of long-term success. Strategies such as setting regular sleep routines and practising stress reduction techniques complement the effects of tirzepatide.
Building Long-Term Habits

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The most sustainable weight loss results come from habits developed while on treatment. By establishing healthier eating patterns, activity routines, and lifestyle practices during therapy, patients are better able to maintain progress even after medication is tapered or stopped.

Frequently Asked Questions
About Tirzepatide in Singapore

Clinical trials show that tirzepatide, sold internationally under the brand name Mounjaro, can help patients lose 15–20% of their body weight after one year of consistent use. This is more than what is typically seen with single-pathway GLP-1 injections such as Semaglutide, which achieve about 10–15%. Results vary depending on lifestyle changes and doctor supervision.
Most patients on tirzepatide, also known as Mounjaro, start to notice reduced appetite and smaller portion sizes within the first few weeks. Visible weight reduction usually appears within 1–3 months, with steady progress continuing over 6–12 months. Clinical studies confirm that the most significant results occur after consistent treatment for at least one year.
Not necessarily. Some patients use tirzepatide (Mounjaro) for several months to a year, then taper off once they have achieved their goals. Others may continue longer if needed for weight maintenance. Our doctors design personalised maintenance plans, which may include switching to alternatives such as Ozempic, Wegovy, or oral semaglutide (Rybelsus) depending on long-term goals.
The most common side effects of tirzepatide (Mounjaro) are digestive, including nausea, bloating, constipation, or diarrhoea. Some patients also notice mild redness or swelling at the injection site. These symptoms usually improve with time and gradual dose increases. More serious complications such as pancreatitis or gallbladder issues are rare but highlight why medical supervision is essential.
Tirzepatide, marketed internationally as Mounjaro, is generally prescribed for patients with a BMI of 30 or higher, or for those with a BMI of 27 and above with weight-related conditions such as diabetes, high blood pressure, or cholesterol problems. Like other prescription options such as Wegovy, Ozempic, and Rybelsus, suitability can only be determined after a full medical consultation.
Unlike single-pathway GLP-1 treatments such as semaglutide (Ozempic, Wegovy, Rybelsus), tirzepatide — also known as Mounjaro — acts on two hormone pathways: GLP-1 and GIP. This dual action provides stronger appetite suppression and more consistent weight reduction, with up to 20% total body weight loss reported in studies.
In most cases, tirzepatide (Mounjaro) is prescribed on its own, as it is highly effective as a single treatment. However, in selected patients, our doctors may combine it with other medical or lifestyle interventions if safe to do so. This decision is always made on a case-by-case basis after full consultation.
At Edwin Lim Medical Aesthetic Clinic, tirzepatide (Mounjaro) is available as a 10 mg pen (40 mg total dose), currently priced at $898 per pen before prevailing government taxes. Depending on the weekly dose prescribed, one pen may last between 1 and 4 months. This makes the monthly cost variable, depending on individual treatment plans.
Yes. Tirzepatide (Mounjaro) was originally developed for type 2 diabetes before being approved for weight management. It improves blood sugar control while supporting weight reduction, making it particularly beneficial for patients managing both conditions. Other GLP-1 medications such as Ozempic and Rybelsus were also first developed for diabetes and later approved for weight loss.
Yes. Mounjaro (tirzepatide) can be prescribed to both men and women. Suitability depends on BMI, medical history, and health goals, rather than gender. Both men and women in Singapore have achieved significant results with doctor-prescribed tirzepatide.
Moderate alcohol use is generally safe during tirzepatide (Mounjaro) treatment, but heavy drinking may worsen digestive side effects such as nausea or diarrhoea. Alcohol can also interfere with blood sugar control, particularly in patients with diabetes. Patients should always discuss alcohol use with their doctor before starting treatment.
Long-term studies of tirzepatide, marketed internationally as Mounjaro, show that it is safe when used under medical supervision, with trials lasting up to two years confirming sustained effectiveness. Ongoing research continues to track cardiovascular and metabolic outcomes over longer periods.
If a weekly tirzepatide (Mounjaro) dose is missed and less than four days have passed, it can usually be taken as soon as possible. If more than four days have passed, patients should skip the missed dose and take the next one on the regular schedule. Always follow your doctor’s advice before making changes to your dosing routine.

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Oral semaglutide tablets provide a needle-free option for patients in Singapore who want medical support in their weight loss journey. With doctor supervision, structured dosing, and lifestyle guidance, this treatment can help you achieve steady, lasting results.

To learn if oral semaglutide is suitable for you, book a consultation with Dr Edwin Lim and our doctors today.
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