Getting a weight loss medication requires a prescription from a licensed healthcare provider, either through an in-person visit or a telehealth platform. The process involves meeting specific weight criteria, completing a medical evaluation, and navigating insurance or out-of-pocket costs. Here’s what each step actually looks like.
Who Qualifies for a Prescription
Weight loss medications are prescribed based on BMI (body mass index). The general threshold is a BMI of 30 or higher, which falls into the obesity category. You can also qualify with a BMI of 27 or higher if you have at least one weight-related health condition, such as type 2 diabetes, high blood pressure, or high cholesterol.
Your provider will also look at your weight loss history. Many insurers and clinical guidelines expect you to have tried lifestyle changes, including diet and exercise, for several months before medication is considered. Some insurance plans specifically require documentation of a six-month trial of behavioral modifications before they’ll approve coverage.
Where to Get a Prescription
You have two main routes: your primary care doctor or an online telehealth platform.
A primary care visit is straightforward. Your doctor already has your medical history, can order lab work through their own system, and can factor in any other medications you’re taking. If your doctor isn’t comfortable prescribing weight loss drugs, they can refer you to an obesity medicine specialist or endocrinologist.
Telehealth platforms have become a popular alternative. The typical process involves filling out a health questionnaire, scheduling a video consultation, and then receiving a prescription that’s either sent to your local pharmacy or shipped directly to you. These platforms often bundle follow-up visits, messaging access, and progress tracking into a subscription. The convenience is real, but so is the tradeoff: the provider doesn’t know your full history the way your regular doctor does, and some platforms steer patients toward specific medications they have arrangements to dispense.
What Medical Tests You May Need
Before prescribing, most providers want baseline lab work to check for conditions that could affect your safety on the medication or that might be driving your weight gain. Common tests include blood sugar levels (HbA1c, which reflects your average over two to three months), a cholesterol and lipid panel, kidney function markers, and liver enzymes. Some providers also check thyroid function, since an underactive thyroid can contribute to weight gain and might need its own treatment.
Once you’re on medication, periodic lab work helps track how your metabolic health is changing and flags any issues early. If you’re on a GLP-1 drug (the injectable class that includes Wegovy and Zepbound), your provider may monitor kidney and liver health at regular intervals.
What Medications Are Available
The FDA has approved six medications for long-term weight management. They fall into two broad categories: pills and injectables.
Oral medications:
- Orlistat (Xenical) blocks fat absorption in the gut. Taken three times daily with meals.
- Phentermine-topiramate (Qsymia) suppresses appetite. One pill daily.
- Naltrexone-bupropion (Contrave) targets hunger and cravings through brain chemistry. Taken one to two times daily.
Injectable medications:
- Liraglutide (Saxenda) is a daily injection that mimics a gut hormone to reduce appetite.
- Semaglutide (Wegovy) works similarly but is given as a weekly injection, with typically greater weight loss.
- Tirzepatide (Zepbound) targets two gut hormones and is also a weekly injection.
A newer option, orforglipron (Foundayo), was approved in early 2026 as a daily pill that works through the same mechanism as the injectable GLP-1 drugs. This is the first oral medication in that class approved specifically for weight loss. Short-term appetite suppressants like phentermine are also available but are only approved for a few weeks of use.
How Insurance Coverage Works
Insurance coverage for weight loss medication is inconsistent and often frustrating. Many plans require prior authorization, meaning your provider must submit documentation proving you meet specific clinical criteria before the insurer agrees to pay. This typically includes your BMI, any related health conditions, and evidence that you’ve attempted lifestyle changes.
Some government insurance programs don’t cover these drugs for weight loss at all. Pennsylvania’s Medicaid program, for example, explicitly excludes GLP-1 medications for the treatment of overweight or obesity, only covering them for other approved uses like cardiovascular risk reduction. Medicare has historically not covered anti-obesity medications, though this has been evolving. If you have both commercial and government insurance, the government plan’s restrictions generally apply.
If your insurance denies coverage, your provider can sometimes appeal by submitting additional clinical documentation. But denials are common, and many people end up paying out of pocket.
What It Costs Without Insurance
Brand-name GLP-1 injectables are expensive at full retail price, often exceeding $1,000 per month. Manufacturer savings programs can reduce this significantly. Novo Nordisk’s savings program for Wegovy offers commercially insured patients a copay as low as $25 per month (with a cap of $100 in monthly savings). For self-pay patients filling through the NovoCare pharmacy, Wegovy pen prices start at $199 per month for the first two months, with higher-dose pens running $399 per month.
These manufacturer programs exclude anyone on Medicare, Medicaid, or other government insurance. Importantly, even if you have government insurance and offer to pay out of pocket yourself, you’re still ineligible for the savings program. Federal employee health plans and Affordable Care Act marketplace plans are not considered government programs for this purpose, so those members can use the discounts.
Oral medications tend to cost less. Generic orlistat is available over the counter at a lower dose (Alli), and generic options for some oral prescriptions bring the monthly cost down considerably.
Filling Your Prescription
You can fill weight loss prescriptions at a retail pharmacy or through a mail-order service, and the choice matters more than you might think. Retail pharmacies give you same-day access and face-to-face pharmacist advice, but they typically dispense 30-day supplies and may charge higher copays. They also may not stock specialty injectables consistently, sometimes needing a few days to order them in.
Mail-order pharmacies usually ship 90-day supplies at a lower per-month cost, since many insurance plans offer preferred pricing for larger fills. The medication arrives at your door in discreet packaging. The downside is shipping delays, especially in extreme weather. Injectable medications require refrigeration, and packages that arrive warm may not be safe to use. If you go the mail-order route, check that the service uses cold-chain shipping with adequate ice packs.
Why to Avoid Compounded Versions
As brand-name GLP-1 drugs have become hard to get and expensive, compounded versions of semaglutide and tirzepatide have flooded the market through online sellers and some compounding pharmacies. These are not FDA-approved products. They don’t go through the same review for safety, effectiveness, or quality.
The FDA has flagged serious problems with these products. As of mid-2025, the agency received over 600 adverse event reports linked to compounded semaglutide and more than 500 tied to compounded tirzepatide, some requiring hospitalization. Common issues include dosing errors from patients measuring and injecting incorrect amounts, products arriving at unsafe temperatures, and labels listing compounding pharmacies that don’t actually exist. Some products sold online are labeled “for research purposes” or “not for human consumption” while being marketed to people with dosing instructions.
The FDA has also warned that certain salt forms of semaglutide used by compounders (semaglutide sodium and semaglutide acetate) have no established safety profile and no clear legal basis for use in compounding. Retatrutide and cagrilintide, two drugs still in development, cannot legally be compounded at all.
What to Expect After Starting
Most injectable weight loss medications start at a low dose that increases gradually over several weeks or months. This ramp-up period minimizes side effects, particularly nausea, which is the most common complaint. Eating smaller meals, avoiding greasy foods, and staying hydrated can help during this adjustment. Some providers recommend ginger-based drinks or crackers around injection time if nausea is persistent.
Weight loss typically becomes noticeable within the first month or two, with the most significant results appearing over six to twelve months as you reach the full maintenance dose. Your provider will schedule follow-up visits to check your progress, adjust dosing, and repeat lab work. If a medication isn’t producing results at its maximum dose after adequate time and adherence, that’s considered a therapeutic failure, and your provider will likely switch you to a different option.
These medications work best alongside changes in eating habits and physical activity. They reduce hunger and make it easier to eat less, but they don’t replace the behavioral foundation. If you stop taking the medication, appetite typically returns to baseline, and weight regain is common without ongoing lifestyle strategies in place.