Ozempic vs Wegovy vs Zepbound in Canada: Differences, Doses and Cost (2026)

You see ads for Ozempic and Wegovy online, or hear about Zepbound from a friend. You wonder which one works, how much they cost in Canada, and whether one is better than the others.

Here's the plain answer. Ozempic and Wegovy are the same medicine (semaglutide) at different doses and for different approved uses. Zepbound is a different medicine (tirzepatide) that copies two gut hormones instead of one and had the largest average weight loss in trials. All three work by making you feel full sooner and eating less. Which one is right for you depends on your health history, side effects you can handle, and cost. Your clinician helps you decide.

How do these medicines work?

All three copy hormones your gut makes when you eat. Your gut releases GLP-1, a hormone that tells your brain you are full and slows the food moving through your stomach. Semaglutide (in Ozempic and Wegovy) copies GLP-1.

Tirzepatide (in Zepbound) copies two hormones. It copies GLP-1 and also GIP, another appetite hormone. Because it copies two, it has two ways to tell your brain you are full. In trials, this made the average weight loss larger.

You inject these medicines once a week under your skin. They take a few days to leave your body, so you need only one shot per week.

What are the approved uses in Canada?

Ozempic is approved in Canada for type 2 diabetes. Doctors sometimes prescribe it off-label for weight loss, but its main approved use is lowering blood sugar.

Wegovy and Zepbound are both approved in Canada for weight management. They are prescribed when weight loss helps your health. Zepbound was approved by Health Canada in May 2025 and reached pharmacies in July 2025.

If you have both diabetes and want to lose weight, Ozempic can do both jobs. If you have high blood pressure or heart disease and want to lose weight, your clinician might choose Wegovy or Zepbound because those are studied in people with weight and heart risk.

How much do you inject?

All three start low and go up slowly over several weeks. You feel fewer side effects (nausea is common early on) if you go up gradually.

Ozempic's highest dose for diabetes is 2.0 mg per week. Wegovy's highest dose for weight management is 2.4 mg per week. Zepbound's highest dose is 15 mg per week. The doses are not directly comparable because tirzepatide and semaglutide are different chemicals.

Your clinician picks a dose based on how you feel and how much weight you are losing. Most people reach their target dose over several months.

Weight loss in trials

In clinical trials, Ozempic (when used for weight loss) led to an average loss of about 10 to 12 percent of body weight. Wegovy led to about 15 percent. Zepbound led to up to about 20 percent, and that weight loss held up over multiple years of follow-up.

These are averages. Your own result can be higher or lower. Weight loss depends on your genes, your starting weight, how well you eat and move, and how long you take the medicine. Some people lose 30 percent of their body weight. Others lose 5 percent. Averages do not predict you.

If you stop taking the medicine, the weight often comes back. These medicines work while you take them.

Full comparison table

Cost in Canada

Ozempic (the brand) costs approximately $250 to $310 per month at Canadian pharmacies. Generic semaglutide is now available (approved in 2026) and costs about $88 to $150 per month.

Wegovy costs approximately $400 to $570 per month. Zepbound costs approximately $400 to $550 per month. Both are usually more expensive than Ozempic because they are newer and only approved for weight management, not diabetes.

Public insurance plans like Ontario's ODB rarely cover Wegovy or Zepbound for weight loss alone. They may cover Ozempic if you have diabetes. Private insurance varies widely. Always ask your pharmacist or insurer to check your plan before you start.

These prices are approximate and vary by pharmacy and region. This is not financial advice.

Side effects

Nausea is the most common side effect, especially when you start or go up in dose. It usually fades after a few days. Other people feel constipation, fatigue, or a change in appetite for sweet foods.

Severe side effects are rare but possible. If you have a personal or family history of thyroid cancer or multiple endocrine tumours, you should not take these medicines.

Dehydration can be a problem if nausea makes it hard to drink water, so staying hydrated matters. If you feel dizzy, faint, or severely nauseous, call your clinician.

Which one should you choose?

Your clinician will help you decide based on:

• Your health history (do you have diabetes, heart disease, high blood pressure?)
• How much weight you need to lose
• Cost and insurance coverage
• How you tolerate side effects
• Availability at your pharmacy

If you have type 2 diabetes, Ozempic might be the first choice because it treats both conditions and is usually cheaper. If you do not have diabetes and want to lose weight, Wegovy is proven and available. If you want the largest average weight loss and can afford it, Zepbound may be an option.

Nothing is "best" for everyone. The best medicine is the one you can take consistently, afford, and that your clinician recommends for your situation.

Questions to ask your clinician

Before you start, ask:

• Which medicine does my clinician recommend for my situation?
• How much weight loss should I expect, and over how long?
• What side effects can I expect, and when do they usually fade?
• How often do I come back for visits?
• What does this cost, and will my insurance cover it?
• Can I take this if I am planning to become pregnant?

For more information about semaglutide options, read generic semaglutide in Canada. For a broader look at how GLP-1 medicines work, see GLP-1 weight loss medication in Canada.

If you are thinking about weight loss medicine, ManceHealth can help. You can speak with a licensed Canadian clinician who will review your health history and talk through your options.