Asking your doctor about weight loss injections doesn’t require a special script or a perfect pitch. It’s a straightforward medical conversation, and doctors have it regularly. The key is walking in prepared: knowing whether you’re likely to qualify, having your weight history organized, and understanding what your doctor needs to hear before writing a prescription.
Know If You Qualify Before You Go
Weight loss injections like Wegovy (semaglutide) and Zepbound (tirzepatide) are prescription medications with specific eligibility criteria. Your doctor will evaluate you against these thresholds, so it helps to know where you stand ahead of time.
For adults, the general criteria are:
- BMI of 30 or higher, regardless of other health conditions
- BMI of 27 or higher with at least one weight-related condition, such as high blood pressure, type 2 diabetes, sleep apnea, high cholesterol, or cardiovascular disease
- BMI of 25 or higher if you are of South Asian, Southeast Asian, or East Asian descent
If you don’t know your BMI, you can calculate it using any free online calculator with your height and weight. Your doctor will measure it at the appointment too, but knowing it beforehand helps you set realistic expectations for the conversation. If you fall below these thresholds, your doctor is unlikely to prescribe these medications, and you’ll want to discuss other options instead.
What to Prepare Before the Appointment
Doctors are far more receptive when you come in with a clear picture of your weight history rather than simply asking for a specific drug. At your first appointment, your doctor will want to talk about your weight loss goals, what your daily routine looks like in terms of diet and exercise, how long you’ve been trying to lose weight, and your full medical history.
Before your visit, write down a few things:
- Previous weight loss attempts: What diets, exercise programs, or lifestyle changes you’ve tried and for how long. Be specific. “I counted calories at 1,500 per day for four months and lost five pounds, then regained it” is more useful than “I’ve tried everything.”
- Timeline: How many months or years you’ve been actively working on weight loss. This matters because many insurance plans require documented evidence of at least six months of lifestyle changes before they’ll cover medication.
- Current health conditions: Any weight-related diagnoses you already have, including high blood pressure, type 2 diabetes, sleep apnea, or joint problems.
- Family history: Whether obesity, diabetes, or heart disease runs in your family.
- Current medications: Everything you’re taking, including supplements. Some medications interact with weight loss drugs or cause weight gain themselves.
This preparation does two things. It shows your doctor you’ve made genuine effort through lifestyle changes alone, and it gives them the documentation they need to justify a prescription, especially for insurance purposes.
How to Frame the Conversation
You don’t need to be indirect or apologetic. Obesity is a medical condition, and asking about treatment options is no different from asking about blood pressure medication. A simple, direct approach works: “I’ve been struggling with my weight for a long time, I’ve tried X and Y without lasting results, and I’d like to talk about whether a weight loss injection might be appropriate for me.”
Framing it as a question rather than a demand matters. Saying “I want Wegovy” puts your doctor in a reactive position. Saying “I’ve been reading about GLP-1 medications and want to know if I’m a good candidate” opens a two-way conversation. Your doctor may have reasons to recommend one medication over another, or they may identify a health issue that makes a different approach safer.
If your doctor seems dismissive, it’s reasonable to ask why directly. Some physicians are less familiar with newer weight management options, and others may have concerns specific to your health profile. If you feel your concerns aren’t being taken seriously, requesting a referral to an obesity medicine specialist or an endocrinologist is a perfectly appropriate next step.
Which Injections Are Available
Two injectable medications are the most commonly prescribed for weight loss right now. Wegovy (semaglutide) mimics a gut hormone called GLP-1 that targets areas of the brain regulating appetite and food intake. Zepbound (tirzepatide) mimics two hormones, GLP-1 and GIP, working through a similar but dual mechanism. Both are self-administered weekly injections. An older option, Saxenda (liraglutide), works through the same GLP-1 pathway but requires daily injections and typically produces less weight loss than the newer options.
All of these medications reduce appetite, so you feel full sooner and think about food less often. They also slow how quickly food leaves your stomach, which extends that feeling of fullness after meals. The most common side effects are nausea, vomiting, and loss of appetite, particularly during the first few weeks as your dose gradually increases.
Your doctor will also want to rule out certain conditions before prescribing. These medications should be avoided if you have a personal or family history of medullary thyroid cancer or a condition called multiple endocrine neoplasia syndrome type 2. A history of pancreatitis is another red flag. If you have gastroparesis (a condition where your stomach already empties slowly), these drugs can make it worse. And if you have diabetic eye damage, your eye doctor should be consulted before you start, particularly with semaglutide.
Navigating Insurance and Prior Authorization
Coverage for weight loss injections is one of the biggest hurdles, and it’s worth discussing with your doctor openly. Many insurance plans require prior authorization, which means your doctor’s office submits documentation proving you meet specific criteria before the insurer agrees to pay.
A common insurance requirement is that you’ve followed a structured weight loss program, including a low-calorie diet, increased physical activity, and behavioral changes, for a minimum of six months before the medication is approved. This is where your documented history of past attempts becomes critical. If your doctor has notes in your chart from previous visits about diet counseling or weight management discussions, that counts in your favor.
Insurance plans also typically require that you continue lifestyle modifications alongside the medication, not use it as a standalone treatment. And most won’t cover combining two weight loss drugs at once, so if you’re already taking an oral weight loss medication, that may need to change.
If insurance denies coverage, ask your doctor’s office about the appeals process. Some manufacturers also offer savings programs that reduce out-of-pocket costs. Your doctor’s office likely has experience navigating these pathways and can tell you which insurers in your area are more likely to approve coverage.
Avoid Compounded Versions
If cost is a barrier, you may come across cheaper compounded versions of semaglutide or tirzepatide sold online or through med spas. These are not FDA-approved, meaning no federal agency has reviewed them for safety, effectiveness, or quality. The risks are real and well-documented.
As of July 2025, the FDA has received over 600 adverse event reports linked to compounded semaglutide and more than 500 tied to compounded tirzepatide. Problems include dosing errors that led to hospitalization, products arriving without proper refrigeration (which degrades the drug), and outright fraudulent products with fake pharmacy names on the labels. Some compounded versions use salt forms of semaglutide that are chemically different from the active ingredient in the approved drug, and their safety profile is unknown.
Bringing up cost concerns with your doctor is a better path. They can help you find legitimate options, whether that’s a manufacturer savings card, a different medication that your insurance does cover, or a patient assistance program.