Before asking which medicine is best, the first question is simpler: who qualifies for prescription weight loss medication? The answer depends mainly on your body mass index (BMI), your weight-related health conditions, your medical history and, in practice, your insurance. This guide explains the official criteria used for medicines such as Wegovy, Zepbound and Mounjaro, shows a quick BMI chart, lists conditions that count and covers who should not take these drugs.
It is general information. Only a licensed clinician who knows your history can confirm eligibility.
The Basic Rule: BMI 30, or BMI 27 With a Related Condition
The prescribing information for FDA-approved weight management medicines such as Wegovy and Zepbound generally describes the same adult criteria, used alongside a reduced-calorie diet and increased physical activity:
- BMI of 30 or higher (obesity), or
- BMI of 27 or higher (overweight) plus at least one weight-related health condition.
That is the core of BMI requirements for weight loss injections. Some medicines also have separate approvals. For example, semaglutide has an indication to reduce the risk of major cardiovascular events in adults with established heart disease and overweight or obesity, and tirzepatide has an approval for obstructive sleep apnea in adults with obesity.
For a deeper look at the criteria in plain language, our existing guide on eligibility for weight loss injections is a good companion to this article.
How to Calculate Your BMI
BMI equals your weight in kilograms divided by your height in meters squared. In pounds and inches, multiply your weight by 703 and divide by your height in inches squared. You can also use the CDC adult BMI calculator. The table below shows the approximate weights at which common heights reach BMI 27 and BMI 30.
| Height | Weight at BMI 27 (lb) | Weight at BMI 30 (lb) |
|---|---|---|
| 5 ft 0 in | 138 | 154 |
| 5 ft 2 in | 148 | 164 |
| 5 ft 4 in | 157 | 175 |
| 5 ft 6 in | 167 | 186 |
| 5 ft 8 in | 178 | 197 |
| 5 ft 10 in | 188 | 209 |
| 6 ft 0 in | 199 | 221 |
| 6 ft 2 in | 210 | 234 |
If your weight is above the BMI 30 column, you meet the main criterion. If you fall between the two columns, you need at least one qualifying condition. If you are below the BMI 27 column, you generally do not qualify for approved weight management medication.
Weight-Related Conditions That Can Qualify You at BMI 27
Labels typically list conditions such as:
- High blood pressure (hypertension)
- Type 2 diabetes or prediabetes (a clinician will confirm how this is counted)
- High cholesterol or triglycerides (dyslipidemia)
- Obstructive sleep apnea
- Cardiovascular disease, including prior heart attack or stroke
Other conditions often considered by clinicians include fatty liver disease, osteoarthritis of the knees and polycystic ovary syndrome. Your clinician will decide what counts, and documentation such as recent blood pressure readings or lab results may be requested.
A Note About Mounjaro
Mounjaro is approved for type 2 diabetes, while the same active ingredient, tirzepatide, is sold under the brand Zepbound for weight management. Prescribing weight-related use of Mounjaro in people without diabetes is a clinical decision made by a physician. You can learn more on our Mounjaro product page and in our Mounjaro injections guide.
Adolescents, Older Adults and Other Groups
Wegovy is approved for adolescents aged 12 and older with obesity, defined by BMI percentile for age and sex, under specialist supervision. For adults of Asian descent, some guidelines use lower BMI thresholds because health risks rise at lower BMIs, so a clinician may take that into account. Older adults can qualify as well, but clinicians monitor muscle loss, hydration and medication changes more closely.
Who Should Not Take Prescription Weight Loss Injections
Even if you meet BMI criteria, some people should avoid GLP-1 based medicines or need a specialist’s input:
- Personal or family history of medullary thyroid carcinoma or MEN 2
- Previous pancreatitis
- Pregnancy, breastfeeding or planning pregnancy soon
- Known allergy to the drug or its ingredients
- Type 1 diabetes, severe gastroparesis or advanced kidney disease without specialist guidance
- Current or past eating disorders
- Use of other GLP-1 medicines at the same time
Medication interactions also matter. See our article on GLP-1 drug interactions for details.
What About Insurance Coverage?
Meeting medical criteria does not guarantee coverage. Many private plans exclude weight loss medicines or require prior authorization, documentation of prior lifestyle attempts and a minimum BMI. Medicare Part D generally does not cover drugs prescribed solely for weight loss, although coverage may apply for other approved indications such as diabetes or cardiovascular risk reduction. Coverage rules change frequently, so check with your plan.
That is why many people look for physician-reviewed providers who work outside traditional insurance billing. If that is your situation, our weight loss medication collection shows the options available.
How the Eligibility Process Works Step by Step
- Check your BMI using the table or CDC calculator.
- List your conditions and medications. Include blood pressure, cholesterol, blood sugar, sleep apnea, supplements and past surgeries.
- Complete a health questionnaire with a provider who will review it honestly.
- Physician review. A licensed clinician decides whether treatment is appropriate and which product and dose to start with.
- Start low and follow up. Expect a slow titration and check-ins to manage side effects and results.
At Weight Lose Solution, prescription treatments and peptide products are dispensed only after an online health questionnaire has been reviewed and approved by a licensed physician, based on your individual situation. Learn more about us, or get in touch to ask whether you are likely to qualify.
What If You Do Not Qualify?
If your BMI is below the thresholds, treatment with these drugs is usually not appropriate, and the risks may outweigh the benefits. That does not mean you have no options. Evidence-based steps include a protein-forward diet, resistance training, better sleep and a structured plan such as our 10-week weight loss programme. If your health changes, reassess with your doctor. Do not try to buy unregulated research vials as a shortcut, because those carry quality and legal risks. Our guide on how to safely buy research peptides online explains why.
What Comes After You Qualify
Qualifying is the beginning of the process, not the end. Plan for a gradual dose increase, regular check-ins, side effect management and a long-term maintenance strategy. Our Mounjaro dosing schedule and Wegovy side effects articles prepare you for the first months. If you want to compare medicines once you know you are eligible, start with semaglutide vs tirzepatide.
Quick Self-Check: Do You Probably Meet the Criteria?
Use these examples to get a sense of where you might land. They are illustrations only.
- Example A: 5 ft 6 in and 195 pounds. That is above the BMI 30 weight (186 pounds), so the main criterion is met, subject to medical screening.
- Example B: 5 ft 8 in and 185 pounds with high blood pressure. The weight sits between the BMI 27 and BMI 30 values, and the blood pressure diagnosis may qualify as a related condition.
- Example C: 5 ft 4 in and 150 pounds with no medical conditions. This is below the BMI 27 weight (157 pounds), so approved weight management medication would generally not be recommended.
- Example D: 5 ft 10 in and 230 pounds with a history of pancreatitis. The BMI qualifies, but the pancreatitis history may rule out these medicines or require specialist review.
What Clinicians Will Ask You
A thorough review is a good sign. Expect questions about your weight history and previous attempts at weight loss, current and past medical conditions, family history of thyroid cancer or endocrine problems, all medications and supplements, whether you may be pregnant or planning pregnancy, alcohol use, mental health history including eating disorders, and your goals. Answer honestly. Withholding details may mean a drug is prescribed that is unsafe for you.
What to Prepare Before Your Review
- Your current height and weight, ideally measured in the past month
- Recent blood pressure readings
- Recent lab results such as cholesterol, HbA1c or fasting glucose, if available
- A list of all medications, doses and supplements
- Details of any past weight loss medicines or surgeries
- Questions about side effects, cost and how long treatment may last
Having this information ready speeds up the process and helps the physician choose an appropriate product and starting dose.
Common Myths About Qualifying
“I only need to want to lose weight.” Desire alone does not meet medical criteria. These medicines have real risks, so benefits need to clearly outweigh them.
“I must have diabetes.” Not for weight management drugs. Obesity or overweight with a related condition is enough for the weight-loss-labeled medicines.
“BMI is perfect.” It is not. BMI does not distinguish muscle from fat, so very muscular people can have a high BMI without excess body fat. Clinicians consider waist circumference and overall health, too.
“Anyone can order peptides online if they sign a waiver.” A waiver is not medical screening. Look for providers where a licensed physician reviews your history before shipping.
Online Review vs In-Person Appointment
Telehealth has made access easier, especially for people in rural areas or with limited local specialists. A well-run online review uses a detailed questionnaire, may request supporting records and gives you a way to contact a clinician. An in-person visit can add physical examination and lab work, which some people need. Neither is automatically better. What matters is that a licensed physician genuinely reviews your information and that follow-up exists if you have problems. If your situation is complex, with multiple conditions or medicines, an in-person specialist may be the best starting point.
How Much Do These Medicines Cost Without Coverage?
Cost is often the real barrier, so it deserves a direct answer. Branded weight management pens commonly list at roughly a thousand dollars or more per month before discounts, which is out of reach for many households. Manufacturer savings programs can reduce the price for people with commercial insurance, while cash-pay and self-pay programs vary. Physician-reviewed providers can sometimes offer lower monthly costs, but price should never replace safety: confirm the exact product, strength, source and who reviews your case before you pay. Compare the options on our weight loss medications page, and remember that the cheapest option is not the best value if it lacks proper screening.
Planning for Long-Term Treatment
Qualifying today does not mean treatment ends in a few months. Obesity is a chronic condition, and clinical trials show that weight tends to return when treatment stops. Ask your clinician how long you are likely to need medication, what the maintenance dose will be and how you will review progress. You can read more about this in our article on what happens when you stop Wegovy.
Frequently Asked Questions
What BMI do you need to qualify for prescription weight loss medication?
Generally 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, high cholesterol, type 2 diabetes or sleep apnea.
Can I get weight loss injections if my BMI is under 27?
Approved weight management medicines are generally not indicated below a BMI of 27. A clinician may discuss other options based on your health history.
Does insurance cover weight loss injections?
Coverage varies. Many plans exclude weight loss drugs or require prior authorization. Medicare Part D generally does not cover drugs prescribed solely for weight loss.
Who should not take GLP-1 weight loss medication?
People with a history of medullary thyroid carcinoma or MEN 2, previous pancreatitis, pregnancy or breastfeeding, known allergy, certain eating disorders or advanced kidney or stomach conditions should not use them without specialist guidance.
Medical disclaimer: this article is educational and does not replace personalized medical advice. Eligibility is determined by a licensed clinician.