Getting a weight loss shot requires a prescription from a licensed healthcare provider, a qualifying body mass index (BMI), and either insurance coverage or a self-pay plan. The process typically takes one to two appointments, whether in person or through telehealth, and you’ll start on a low dose that gradually increases over several months.
Who Qualifies for a Prescription
Weight loss injections are prescription medications, not something you can buy over the counter or order directly. To qualify, you generally need a BMI of 30 or higher, which is the clinical threshold for obesity. You may 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, high cholesterol, cardiovascular disease, fatty liver disease, or sleep apnea.
Your provider will assess more than just your weight. They’ll review your full medical history, current medications, and any complications tied to excess weight. This evaluation helps determine whether you’re a good candidate and which medication makes the most sense for your situation.
Some people cannot use these medications at all. If you have a personal or family history of medullary thyroid carcinoma, or if you’ve been diagnosed with multiple endocrine neoplasia syndrome type 2, these shots are off the table. The same applies if you’ve ever had a severe allergic reaction to the medication’s ingredients.
Where to Get a Prescription
You have two main routes: an in-person visit or a telehealth appointment. Both can result in a legitimate prescription.
For in-person care, start with your primary care doctor. If they don’t prescribe weight loss medications, ask for a referral to an obesity medicine specialist or an endocrinologist. These specialists are more familiar with the medications and the dose adjustments involved. You can also search for providers through tools like Healthgrades, where you can filter by specialty and check which insurance plans they accept.
Telehealth platforms have become a popular option because they’re faster and more convenient. Several services connect you with licensed providers who can evaluate you virtually, write a prescription, and ship the medication to your door. Some of these platforms are recognized by the drug manufacturers for legitimate sourcing and patient support. A virtual visit typically involves filling out a health questionnaire, uploading any relevant lab work, and meeting with a provider by video. If you qualify, the prescription is sent to a pharmacy, sometimes the platform’s own.
Which Medications Are Available
The FDA-approved weight loss injections are GLP-1 receptor agonists, a class of drugs that mimic a gut hormone involved in appetite and blood sugar regulation. They slow digestion, reduce hunger signals in the brain, and help you feel full on less food. The two most widely prescribed brand-name options are Wegovy (semaglutide) and Zepbound (tirzepatide). Both are self-administered weekly injections using a prefilled pen.
These medications use a gradual dose increase, called titration, to reduce side effects. Zepbound, for example, has six dose levels ranging from 2.5 mg to 15 mg. You start at the lowest dose and move up roughly every four weeks. The in-between doses (2.5 mg, 7.5 mg, and 12.5 mg) exist solely for this stepping-up process and aren’t meant as maintenance doses. Skipping ahead to a higher dose increases the risk of nausea, vomiting, and other gastrointestinal problems that can set back your progress.
What It Costs and How to Save
Cost is one of the biggest barriers. Without any discounts, these medications can run over $1,000 per month at retail price. But manufacturer savings programs and insurance coverage can bring that number down significantly.
If you have commercial insurance that covers the medication, Wegovy’s manufacturer savings card can bring your copay down to as little as $25 per month, with a maximum savings of $100 per month. If your insurance doesn’t cover it or you’re paying out of pocket, the manufacturer offers self-pay pricing: starting at $199 per month for the standard Wegovy pen and $399 per month for the higher-dose pen, through June 30, 2026. An oral version of Wegovy starts at $149 per month. These prices require filling your prescription through the manufacturer’s pharmacy or using their savings offer.
There’s an important catch for anyone on government insurance. If you’re enrolled in Medicare, Medicaid, TRICARE, VA benefits, or any similar federal or state program, you’re ineligible for these savings programs. That restriction applies even if you have both commercial and government coverage, and even if you offer to pay out of pocket without running it through your government plan.
Avoid Compounded Versions
Because of high demand and cost, some people turn to compounded versions of these drugs, which are mixed by specialty pharmacies rather than manufactured by the original companies. The FDA has raised serious concerns about this practice. Compounded versions sometimes use salt forms of the active ingredient (like semaglutide sodium or semaglutide acetate) that are chemically different from what’s in the approved drugs. These alternative forms haven’t been evaluated for safety or effectiveness.
Some compounds go even further. Products containing retatrutide or cagrilintide, which are experimental drugs still in clinical trials, cannot legally be compounded at all. They aren’t components of any FDA-approved medication and haven’t been proven safe for any use. Neither semaglutide nor tirzepatide currently appears on the FDA’s drug shortage list, which removes the legal justification many compounders previously relied on to produce these medications.
What to Expect After You Start
Once you have your prescription and your first pen arrives, you’ll inject it yourself once a week, typically in your abdomen, thigh, or upper arm. The needle is small and the process takes seconds. Most providers recommend picking the same day each week to build a routine, though the exact time of day doesn’t matter.
The early weeks on a low dose are mainly about letting your body adjust. Nausea is the most common side effect, and it tends to peak during dose increases before fading as your body adapts. Eating smaller meals, avoiding greasy foods, and staying hydrated can help. Some people also experience constipation, diarrhea, or mild stomach pain, especially during the first month or two.
Weight loss is gradual. Don’t expect dramatic changes in the first few weeks on the starting dose, which is intentionally too low to produce significant results. The meaningful weight loss typically begins once you reach the mid-range or maintenance doses, which can take three to four months of titration. Your provider will check in regularly to monitor your progress, adjust your dose, and watch for any side effects that need attention.