GLP-1 Explained
Wegovy vs Ozempic: What's the Difference? A Doctor Explains
Both contain semaglutide — so what's different? A Singapore doctor explains Wegovy vs Ozempic: doses, approved uses and what to ask your doctor.
Wegovy and Ozempic are two of the most-searched medicine names in weight management — and the confusion between them is completely understandable. Both contain the same active ingredient, both are given as a once-weekly injection, and both come from the same manufacturer. So why do they have different names, and does the difference matter?
The short answer
Wegovy and Ozempic contain the same active ingredient: semaglutide. They are different products approved for different purposes:
- Wegovy is approved for chronic weight management in adults — at a higher dose (2.4 mg) studied specifically for weight loss.
- Ozempic is approved for type 2 diabetes — at lower doses, studied for blood-sugar control (weight change is a secondary effect).
Think of it like two models built on the same engine: the underlying mechanism is shared, but the product, dose and approval are distinct.
What they share
- Same ingredient — semaglutide, a GLP-1 receptor agonist that regulates appetite and blood sugar.
- Same format — a small injection under the skin, once a week, using a pre-filled pen.
- Same mechanism — acting on the body’s natural gut-hormone signalling.
What is different
| Wegovy | Ozempic | |
|---|---|---|
| Approved purpose | Chronic weight management | Type 2 diabetes |
| Semaglutide dose | Higher (2.4 mg at maintenance) | Lower doses for glycaemic control |
| Who it is studied for | Adults managing obesity/overweight | Adults with type 2 diabetes |
None of this is a recommendation for either — it is simply what the approvals say. Which product (if any) is appropriate for a given person is a prescribing decision.
Why the distinction matters in Singapore
In Singapore, both are prescription-only medicines. That means no legitimate pathway runs through a website, a friend, or an online seller — it runs through a doctor who assesses your history, decides what is clinically appropriate, prescribes under his or her own registration, and monitors your response.
Patients sometimes ask whether they can switch products on their own because of availability or price. The honest answer: these products are not interchangeable without medical guidance — different doses and different indications mean a switch is a clinical decision, not a shopping choice.
What to ask your doctor
If you are trying to make sense of the two names, the useful questions are:
- Which product, if any, is appropriate for my situation — and why?
- What dose would I start on, and how would it build up?
- What monitoring and follow-up would look like?
- What happens if I have side effects?
A responsible doctor will answer all four before anything is prescribed — and will tell you plainly if no medicine is needed at all. That assessment-first approach is exactly how our doctor-led weight management programme works: understanding your situation before recommending anything. For the wider picture, our GLP-1 weight loss guide explains the medicine class these products belong to.
Frequently asked questions
Are Wegovy and Ozempic the same medicine?
They contain the same active ingredient — semaglutide — but they are different products approved for different purposes. Wegovy is approved for chronic weight management at a higher dose; Ozempic is approved for type 2 diabetes. Doctors prescribe according to what is appropriate for the individual patient.
Can someone with diabetes use Wegovy instead of Ozempic?
That decision belongs to the prescribing doctor. The two products have different approved indications and dose schedules, and treatment is matched to the individual's clinical situation — never chosen by the patient on their own.
Is one 'stronger' than the other?
The doses differ because the approved purposes differ, not because one product is 'better'. Both contain the same active ingredient; what matters is which product, dose and monitoring plan is appropriate for you — a clinical decision.
Why do people confuse them?
Because both are once-weekly semaglutide injections made by the same manufacturer, they look similar and are easily mixed up. That is exactly why they must never be substituted without a doctor's guidance.
