Do You Qualify for Weight Loss Medication?
You may qualify for prescription weight loss medication based on your BMI, health history, current medications, and whether you have any weight-related health conditions.
In general, adults may be considered if their BMI is 30 or higher, or 27 or higher with at least one weight-related condition. However, BMI alone doesn't determine whether a medication is right for you. Your overall health and medical history also matter. [1][2]
With TreatMeNow, you can find out whether you may be eligible by completing an online weight loss assessment. Most patients only need to complete the online questionnaire, although a video consultation may be requested if the healthcare provider needs more information.
This guide explains the usual weight loss medication eligibility criteria in Canada, what may prevent you from using certain medications, and how the TreatMeNow assessment works.
Who Qualifies for Weight Loss Medication in Canada?
BMI is one of the main factors used to determine weight loss medication eligibility.
For adults, prescription weight loss medication may be considered if you have:
- A BMI of 30 or higher or
- A BMI of 27 or higher with at least one weight-related condition, such as high blood pressure, type 2 diabetes, dyslipidemia, or obstructive sleep apnea [1][2]
These criteria help identify people who may benefit from medication, used alongside a reduced-calorie diet and increased physical activity, as part of a broader weight management plan.
Your BMI is only part of the picture. Your medical history, current medications, allergies, and treatment goals can also affect which options may be suitable for you.

What Can Disqualify You From Weight Loss Medication?
Some medical conditions or circumstances can make certain weight loss medications unsuitable, and which ones matter depends on the medication. For example, GLP-1 medications such as semaglutide (Wegovy) are not recommended for people with:
- A personal or family history of medullary thyroid carcinoma (MTC)
- Multiple endocrine neoplasia type 2 (MEN 2) [1]
Across most weight loss medications, treatment is also generally not recommended during pregnancy or while breastfeeding. Other medications have their own restrictions. For example, naltrexone/bupropion is not suitable for people with uncontrolled high blood pressure or a seizure disorder. [1][3]
Because eligibility depends on the medication being considered and your health history, a healthcare provider should review these factors before treatment is prescribed.
Do You Need a Referral for Weight Loss Medication?
No. You can start the process online without first getting a referral from your family doctor. This makes it possible to begin from home without arranging an in-person appointment, while still having your information reviewed by a licensed healthcare provider through TreatMeNow's telemedicine service.
How Does the Online Weight Loss Assessment Work?
The TreatMeNow online weight loss assessment collects the information needed to review your eligibility.
You will be asked about:
- Your treatment goals
- Your height and weight
- Your medical history and current medications
- Your allergies
A licensed healthcare provider reviews your answers. Most patients do not need a video appointment, but if the provider needs more information, they may ask follow-up questions or request a video consultation.
If weight loss medication is appropriate, a prescription may be issued based on your health information and treatment needs. Completing the assessment does not guarantee that you will receive a prescription.
For a more detailed breakdown of how to get weight loss medication online, see How to Get Wegovy Online in Canada.

What Happens After the Assessment?
If the healthcare provider who reviews your assessment decides treatment is appropriate, they will issue a prescription, which can then be filled through a licensed Canadian pharmacy. TreatMeNow works with licensed Canadian physicians and offers medication delivery in discreet packaging.
If a particular medication is not suitable, that does not necessarily mean you are out of options. Your provider may recommend a different treatment based on your health history, goals, and the medications available to you.
To learn more about the treatment options that may be considered after your assessment, read Weight Loss Medication in Canada: A Complete Guide to GLP-1 Options.
The Bottom Line: Do You Qualify?
Weight loss medication can be an option for some adults who meet the usual BMI criteria and do not have health concerns that make treatment unsuitable. Your BMI matters, but it is only one part of the decision. Your medical history, current medications, allergies, and treatment goals also need to be considered before a prescription is issued.
To learn more about prescription treatment options, visit the TreatMeNow weight loss medication page. You can also browse the weight loss blog for more information about weight loss medications, eligibility, side effects, costs, and weight loss treatment in Canada.
FAQ: How Do I Know If I Qualify for Prescription Weight Loss Medication?
You may qualify for prescription weight loss medication if you meet the usual BMI criteria and a healthcare provider determines that treatment is appropriate for your health history. Adults may be considered if they have a BMI of 30 or higher, or a BMI of 27 or higher with at least one weight-related condition, such as high blood pressure, type 2 diabetes, dyslipidemia, or obstructive sleep apnea. However, BMI is only one part of the decision.
A healthcare provider will also review your medical history, current medications, allergies, treatment goals, and any health concerns that could make certain medications unsuitable. For example, pregnancy and breastfeeding can affect eligibility for most weight loss medications, and a personal or family history of medullary thyroid carcinoma or multiple endocrine neoplasia type 2 (MEN 2) can rule out GLP-1 medications.
Here are the steps to take to find out if you qualify:
- Complete an online weight loss assessment or speak with a healthcare provider.
- Have your current height and weight available.
- Share any weight-related conditions you have been diagnosed with.
- Provide your full medical history.
- List your current medications (prescription, over-the-counter, and supplements) and any allergies or past reactions to medications.
- Explain your treatment goals and previous weight loss attempts.
- Tell the provider if you are pregnant, breastfeeding, or planning a pregnancy.
- Be open to alternatives. If one medication isn't suitable, your provider may recommend another option.
Disclaimer This article is shared for general informational purposes and isn't intended as medical advice. It shouldn't replace a consultation with your doctor or another licensed healthcare provider, especially when it comes to medications, diagnoses, or treatment decisions. Always check with a qualified professional before making changes to your health or care plan.
References
- Novo Nordisk Canada Inc. Wegovy (semaglutide injection) Product Monograph
- Eli Lilly Canada Inc. Zepbound (tirzepatide injection) Product Monograph
- Wharton S, Lau DCW, Vallis M, et al. Obesity in adults: a clinical practice guideline