Wegovy vs Ozempic: Understanding the Differences

Quick answer

Wegovy and Ozempic are separate prescription medications that contain the same active ingredient, semaglutide. Both belong to a class of medications called GLP-1 receptor agonists and are generally administered as weekly injections. 

However, they have different product-specific dosing instructions, formulations and prescribing information. Although they share an active ingredient, they are not automatically interchangeable. A practitioner can help you understand their differences and determine which option is appropriate for your individual circumstances.

When comparing Wegovy and Ozempic, it is easy to assume that two medications containing the same active ingredient are identical. However, prescription medications can differ in their formulations, dosing schedules, approved product information and instructions for use, even when they contain the same ingredient.

Both Wegovy and Ozempic contain semaglutide, which acts on receptors involved in regulating appetite, food intake and blood glucose. Despite this similarity, the two products have distinct prescribing information that is important to understand before starting or switching treatment.

This guide explores the key differences between Wegovy and Ozempic, including how they work, how they are administered, what affects their cost in Canada and what to discuss with a practitioner.

What is the difference between Wegovy and Ozempic?

The main difference between Wegovy and Ozempic is that they are separate prescription products with their own product-specific dosing instructions, formulations and prescribing information.

Is Wegovy the same as Ozempic?

No. Wegovy and Ozempic contain the same active ingredient, semaglutide, but they are distinct prescription products.

An active ingredient is the substance in a medication responsible for its pharmacological action. In this case, semaglutide interacts with GLP-1 receptors in the body. However, the product name, prescribed dose, formulation and instructions for use still matter.

The distinction is important because each product has its own prescribing information. The dose prescribed for one product should not automatically be assumed to be equivalent to a dose of the other.

If you have been prescribed one product and are considering the other, speak with your practitioner before making any changes. They can review your prescription, medical history and current treatment plan to help determine the appropriate next step.

How do Wegovy and Ozempic work?

Wegovy and Ozempic work by mimicking the action of glucagon-like peptide-1 (GLP-1), a hormone naturally produced in the body. This hormone plays a role in regulating appetite, digestion and blood glucose levels. By activating GLP-1 receptors, these medications influence these processes.

Its actions include:

• Supporting glucose regulation: Semaglutide helps the body regulate blood glucose through its effects on insulin secretion and glucagon release.
• Influencing appetite: GLP-1 receptor activity is involved in signalling related to hunger and food intake.
• Affecting stomach emptying: Semaglutide can slow the rate at which the stomach empties, particularly during the early stages of treatment.

The way a medication affects an individual can vary. Its effects and safety also depend on factors such as the prescribed dose, other medications and personal medical circumstances.

For detailed information about semaglutide, including its precautions and possible adverse effects, consult the relevant Canadian product monograph and speak with a practitioner.

How much do Wegovy and Ozempic cost in Canada?

The cost of Wegovy and Ozempic in Canada can vary depending on the product, prescribed strength, pharmacy, dispensing fees and available insurance or drug coverage.

Because both products contain semaglutide, it may be tempting to assume they cost the same. However, shared active ingredients do not guarantee identical prices. The total cost can also change depending on the prescribed regimen and the number of doses supplied.

When comparing prices, consider the following:

• Medication cost: The price of the prescribed product and strength.
• Pharmacy fees: Dispensing fees and any other applicable charges.
• Insurance or drug coverage: Whether your private insurance or applicable public drug plan covers the product under its eligibility rules.
• Ongoing treatment costs: The cost of subsequent prescriptions and supplies over time.

For the most accurate comparison, request current pricing for the specific product and strength on your prescription. Ask your pharmacist about applicable fees and check your plan's coverage details before making a decision.

Prices can change, so confirm the current cost directly with a pharmacy rather than relying on an older online estimate.

Can you switch between Wegovy and Ozempic?

Switching between Wegovy and Ozempic should only be done with guidance from a qualified practitioner.

Although both products contain semaglutide, their dosing instructions and product information differ. A dose used with one product should not be transferred to the other without an appropriate assessment and prescribing instructions.

Before recommending a change, a practitioner may review your current dose, how long you have been taking the medication, any side effects, other medications you use and your overall medical history.

If a switch is appropriate, they can explain how to follow the new prescription safely, including when to begin, which dose to use and whether any additional monitoring is needed.

Do not stop, restart, combine or change the dose of either product on your own. If you have missed a dose or are experiencing side effects, consult the instructions for your prescribed product and contact your practitioner or pharmacist for guidance.

When should you speak with a practitioner?

Speak with a practitioner if you are considering starting semaglutide, changing your prescription, adjusting your dose or switching between products. They can explain the differences between available options and help you understand the potential benefits, risks and costs relevant to your circumstances.

You should also seek medical advice if you experience persistent or concerning side effects. Severe or persistent abdominal pain, repeated vomiting, signs of an allergic reaction or other serious symptoms warrant prompt medical assessment. Seek emergency care if symptoms are severe or you think you may be experiencing a medical emergency.‍

Frequently asked questions

1. Is Wegovy the same as Ozempic?

No. Both products contain semaglutide, but they are separate prescription medications with different product-specific prescribing information, dosing instructions and formulations. They should not be considered automatically interchangeable. Speak with a practitioner before making any changes to your prescription.

2. Can you switch from Wegovy to Ozempic?

A practitioner can assess whether switching is appropriate and provide instructions for doing so safely. The products have their own dosing schedules, so you should not transfer a dose from one product to the other or change your treatment without professional guidance.

3. Which is more expensive, Wegovy or Ozempic?

The cost can vary by product, prescribed strength, pharmacy, dispensing fees and insurance coverage. Neither product should automatically be assumed to be less expensive. Contact a pharmacy for current pricing based on your prescription and check your insurance plan for applicable coverage.

4. Do Wegovy and Ozempic have the same side effects?

Because both contain semaglutide, they can have similar side effects. These may include nausea, vomiting, diarrhoea, constipation and abdominal discomfort. The likelihood and severity of side effects can vary. Review the product monograph for your prescription and speak with a practitioner about any symptoms that concern you.

5. Can you take Wegovy and Ozempic together?

Do not use both products together unless a qualified practitioner has specifically assessed your situation and provided clear instructions. Both contain semaglutide, so using them together could result in unintended duplicate dosing. Check with your practitioner or pharmacist before taking either product if you are uncertain about your prescription.