Getting a GLP-1 medication requires a prescription from a licensed provider, and the process typically starts with either your primary care doctor, an obesity medicine specialist, or a telehealth service. The specific path depends on whether you’re seeking the medication for weight loss or type 2 diabetes, and whether your insurance will cover it. Here’s what to expect at each step.
Who Qualifies for a GLP-1 Prescription
The FDA-approved criteria are straightforward. For weight loss, you qualify if you have a BMI of 30 or higher (classified as obesity). You can also qualify with a BMI of 27 or higher if you have at least one weight-related health condition, such as high blood pressure, high cholesterol, type 2 diabetes, sleep apnea, heart disease, polycystic ovarian syndrome, or fatty liver disease. For adolescents aged 12 and older, the threshold is a BMI at or above the 95th percentile for their age and sex.
For type 2 diabetes specifically, providers typically consider a GLP-1 when metformin alone isn’t bringing your blood sugar to target, when metformin isn’t safe for you, or when your A1C remains above goal after three months of treatment, particularly if you also have heart disease, heart failure, or chronic kidney disease.
Which Providers Can Prescribe
Any licensed prescriber can write a GLP-1 prescription: primary care physicians, nurse practitioners, physician assistants, endocrinologists, cardiologists, and gastroenterologists. You don’t need a specialist referral. Your primary care doctor is a perfectly fine starting point, and many are already familiar with these medications.
Telehealth platforms have also become a common route. Some offer consultations specifically for weight management and can prescribe GLP-1s remotely after reviewing your medical history and lab work. If you go this route, make sure the platform connects you with a licensed provider in your state and provides ongoing follow-up, not just a one-time prescription.
What to Expect at Your Appointment
Your provider will likely order bloodwork before prescribing. While there’s no single required panel, most doctors want a baseline picture of your metabolic health. Expect tests for blood sugar and A1C (your average blood sugar over two to three months), a cholesterol and lipid panel, kidney function markers, and liver enzymes. Some providers also check thyroid function, since GLP-1 medications carry a label warning related to thyroid tumors found in animal studies.
Beyond lab work, your provider will review your medical history for potential contraindications. A personal or family history of a specific type of thyroid cancer (medullary thyroid carcinoma) or a condition called multiple endocrine neoplasia syndrome type 2 rules out these medications. A history of pancreatitis doesn’t automatically disqualify you, but it’s something your provider will want to discuss carefully before proceeding.
Come prepared to talk about what you’ve already tried for weight management. This matters both clinically and for insurance purposes. Be honest about your diet history, exercise habits, and any previous weight loss attempts. If your provider feels a GLP-1 is appropriate, they’ll typically start you on the lowest dose and increase it gradually over several weeks or months.
The Insurance Hurdle
Getting the prescription written is often easier than getting it covered. Most insurers require prior authorization for GLP-1 medications, and the criteria can be strict. A representative example from a major insurer (Cigna) requires all of the following before approving coverage for weight loss: you must have tried behavioral modification and dietary changes for at least three months, you must meet the BMI thresholds (30 or above, or 27 or above with a qualifying comorbidity), and you must continue lifestyle modifications alongside the medication.
Your provider’s office typically handles the prior authorization paperwork, but you can help the process along. If you’ve worked with a dietitian, done a structured weight loss program, or tracked your diet and exercise, bring documentation. The more evidence you have of a sustained effort at lifestyle change, the stronger your case. Some insurers also require “step therapy,” meaning you may need to try older, less expensive weight loss medications before they’ll approve a GLP-1.
Many employer-sponsored plans still exclude weight loss medications entirely. If yours does, you’ll be paying out of pocket. Brand-name GLP-1s for weight loss run roughly $1,000 or more per month without insurance. Some manufacturers offer savings programs through their websites, and certain employers have started offering supplemental reimbursement programs to offset costs. It’s worth checking both your manufacturer’s patient assistance page and your employer’s benefits portal.
What About Compounding Pharmacies
Compounding pharmacies have marketed lower-cost versions of GLP-1 medications, but the regulatory landscape has tightened significantly. The FDA permits compounding of specific drugs only under limited circumstances, primarily when there’s an active drug shortage or a documented clinical need for a customized formulation for an individual patient. As supply of brand-name GLP-1s has stabilized, the FDA has narrowed the window for compounders.
Currently, neither semaglutide nor tirzepatide appears on the FDA’s approved bulk drug substances list or the drug shortage list. For pharmacies compounding semaglutide injections under standard pharmacy rules, the FDA’s period of enforcement discretion has already ended. For outsourcing facilities (larger-scale compounding operations), the enforcement grace period for semaglutide was set to expire in mid-2025. The FDA has also emphasized it may take action against any compounded product found to be of substandard quality, regardless of shortage status.
This means compounded GLP-1s occupy increasingly uncertain legal and safety ground. If you’re considering this route, understand that these products haven’t undergone the same testing and quality controls as FDA-approved versions.
Preparing for Side Effects and Follow-Up
GLP-1 medications cause gastrointestinal side effects in a large majority of people. Clinical trials report rates around 50%, but real-world data suggests closer to 70% of patients experience some combination of nausea, vomiting, acid reflux, diarrhea, or constipation. The good news: for most people, these symptoms are worst in the first three to four weeks and then fade significantly.
A practical tip that clinicians recommend: don’t start the medication on a full stomach. Because GLP-1s slow digestion, beginning with a lot of food in your system can make nausea considerably worse than it needs to be. If side effects persist or are severe, your provider has options, including adjusting the dose escalation timeline or adding medications to manage specific symptoms. About 5 to 10% of patients ultimately discontinue due to side effects that never resolve.
Expect regular follow-up visits once you start. Your provider will track your weight loss trajectory, monitor lab values, and watch for signs of muscle loss. These appointments aren’t optional: close monitoring is how your provider determines whether the dose needs adjusting and whether the medication is working safely for you.
Planning for the Long Term
One thing that catches many people off guard is that GLP-1 medications are generally a long-term commitment. When people stop taking them, blood sugar levels worsen (if used for diabetes) and weight typically rebounds, often significantly. The best outcomes in clinical data come from combining the medication with sustained changes to diet and physical activity.
This has practical implications for your prescription plan. Before starting, it’s worth understanding what your insurance will cover long-term, not just for the first fill. Some plans authorize these medications for a set period and then require re-authorization with documented progress. Others cover them indefinitely as long as you continue meeting clinical criteria. Knowing this upfront helps you avoid a surprise gap in coverage months down the road.