Medically reviewed by Dr. Kevin Chua, Medical Director
Medically reviewed by Dr. Kevin Chua, Medical Director
Disclaimer: This article provides general medical information and is not a substitute for professional medical advice.
Not everyone who wants to lose weight needs or qualifies for prescription medication. GLP-1 medications are powerful tools designed for people with clinically significant excess weight — where the health risks of obesity outweigh the risks of treatment. Understanding the eligibility criteria helps set realistic expectations and ensures appropriate use.
Body Mass Index (BMI) is the primary screening tool for medical weight loss eligibility. Crucially, Singapore and other Asian countries use lower BMI thresholds than Western guidelines, reflecting the higher metabolic risk Asians carry at lower BMIs.
| Classification | BMI (Asian) | BMI (WHO Global) |
|---|---|---|
| Underweight | <18.5 | <18.5 |
| Normal | 18.5–22.9 | 18.5–24.9 |
| Overweight | 23.0–27.4 | 25.0–29.9 |
| Obese | ≥27.5 | ≥30.0 |
| Criteria | Eligible for GLP-1 Treatment |
|---|---|
| BMI ≥30 (Asian: ≥27.5) | Yes — qualifies based on BMI alone |
| BMI ≥27 (Asian: ≥25) + comorbidities | Yes — with qualifying conditions |
| BMI <27 without comorbidities | Generally not eligible |
BMI is a screening tool, not the whole picture. Your doctor will consider additional factors when assessing suitability for treatment.
GLP-1 medications are not suitable for everyone. They should NOT be used if you have:
noah™ provides a structured, doctor-led assessment to determine whether medical weight loss treatment is appropriate for you.
You'll complete a comprehensive health assessment covering: - Height, weight, and body measurements - Weight history and previous weight loss attempts - Medical conditions and family history - Current medications and supplements - Diet, exercise, and lifestyle habits - Weight loss goals and motivations
An SMC-registered doctor evaluates your assessment, checking: - BMI eligibility - Presence of comorbidities - Contraindications - Suitability for specific medications - Any need for blood tests or further evaluation
Your doctor will either: - Prescribe medication with a personalised treatment plan - Recommend lifestyle modifications first if medication isn't yet indicated - Request additional information (e.g., blood tests, specialist input) - Recommend in-person consultation for complex cases
If you don't meet the criteria for GLP-1 medication, there are still evidence-based approaches to weight management available:
GLP-1 receptor agonist medications for weight management in Singapore typically cost SGD $200–500 per month depending on the specific medication and dosage. Costs vary by provider and whether branded or biosimilar options are available. noah™ offers structured weight loss plans with doctor oversight.
Prices are approximate and may vary. Updated April 2026.
Based on current guidelines, you likely don't meet the criteria for prescription weight loss medication. A BMI of 25.5 (Asian cut-off: overweight) without comorbidities suggests that lifestyle modification (diet and exercise) is the appropriate first-line approach.
These medications are designed for clinically significant weight management, not cosmetic fine-tuning. Using powerful medications for minor weight loss is not medically appropriate and would not typically be prescribed.
Your doctor may recommend baseline blood tests (fasting glucose, HbA1c, lipid panel, thyroid function) to assess metabolic health and monitor treatment effects. This is particularly important if you have or are at risk for diabetes.
Previous unsuccessful weight loss attempts are actually an important part of the clinical assessment and support the case for medical intervention. Document what you've tried and share this with your doctor.
In many cases, yes — if you clearly meet the eligibility criteria and have no contraindications. Some cases may require additional assessment (blood tests, specialist input) before prescribing.
→ Return to pillar: Complete Guide to Medical Weight Loss in Singapore
This article is for informational purposes only and does not constitute medical advice. Always consult a licensed doctor before starting any treatment.
Wilding JPH, Batterham RL, Calanna S, et al. Once-weekly semaglutide in adults with overweight or obesity. N Engl J Med. 2021;384(11):989-1002. PMID: 33567185 ↩


Articles featured on Noah are for informational purposes only and should not be constituted as medical advice, diagnosis or treatment. If you have any medical questions or concerns, please talk to your healthcare provider.