GLP-1 receptor agonist medications, most commonly known by the brand names Ozempic, Wegovy, Mounjaro, and Zepbound, have fundamentally changed the medical weight loss landscape. Understanding how they work, what they cost, and how to find a qualified provider is essential.
What GLP-1 medications are and how they work
GLP-1 receptor agonists are injectable medications that mimic a hormone your body naturally produces. This hormone signals fullness to your brain, slows stomach emptying, and helps regulate blood sugar. The result is a significant reduction in appetite and caloric intake.
Semaglutide is the active ingredient in both Ozempic (approved for type 2 diabetes) and Wegovy (approved for weight management). Tirzepatide is the active ingredient in Mounjaro (approved for diabetes) and Zepbound (approved for weight management). The medications are self-administered as weekly subcutaneous injections.
What the clinical data shows
In the STEP trials, patients taking semaglutide lost an average of approximately 15% of their body weight over 68 weeks. In the SURMOUNT trials, patients taking tirzepatide at the highest dose lost approximately 21%. A 220-pound patient losing 15% would lose approximately 33 pounds.
Cost and insurance
Without insurance, Wegovy and Zepbound have a list price of roughly 1,000 to 1,300 dollars per month. Insurance coverage is inconsistent but evolving. Some plans cover these medications for patients with BMI of 30 or higher, or 27 with weight-related conditions. Many practices offer lower-cost options through compounding pharmacies.
What a quality program includes
A quality program includes an initial medical evaluation with bloodwork, physician oversight with regular check-ins, dosage titration guidance, nutritional counseling, exercise guidance, and a long-term maintenance plan. Be cautious of providers who prescribe after a brief telehealth visit with no ongoing monitoring.
Common side effects
The most frequently reported side effects are gastrointestinal: nausea, constipation, diarrhea, and decreased appetite. These tend to diminish over time. More serious but rare side effects include pancreatitis, gallbladder disease, and thyroid concerns.
Finding a provider
Look for providers with training in obesity medicine or endocrinology. The American Board of Obesity Medicine (ABOM) certification indicates specialized training. Ask what medications they prescribe, what the program includes beyond the prescription, how often you will have check-ins, and what the long-term maintenance plan is.
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