GLP-1 Receptor Agonist
Semaglutide
GLP-1 receptor agonist · Ozempic · Wegovy · Rybelsus
The active ingredient in Ozempic and Wegovy — now available as compounded semaglutide through licensed telehealth providers and 503B pharmacies.
Semaglutide is the active ingredient inside three FDA-approved medications — Ozempic (weekly injection for Type 2 diabetes), Wegovy (weekly injection for weight management), and Rybelsus (daily oral tablet for Type 2 diabetes). It belongs to a class called GLP-1 receptor agonists and works by mimicking a natural gut hormone that signals fullness, slows digestion, and improves insulin response. Compounded semaglutide — made by licensed 503B pharmacies using the same active ingredient — is available through telehealth providers and is often significantly more affordable than the branded versions.
What Semaglutide is used for
Semaglutide is FDA approved for the following indications and is widely prescribed for these uses through telehealth providers.
- Weight loss & long-term weight management
- Blood sugar control in Type 2 diabetes
- Reduced appetite and fewer cravings
- Cardiovascular risk reduction (Ozempic)
- Chronic weight disease management
How does semaglutide work?
Semaglutide mimics GLP-1 (glucagon-like peptide-1), a hormone your intestine releases after eating. By binding to GLP-1 receptors throughout the body, semaglutide does three key things simultaneously:
- Slows gastric emptying — food stays in your stomach longer, keeping you full.
- Signals the brain — it acts on appetite-regulating centers to reduce hunger and food cravings.
- Improves insulin secretion — it helps the pancreas release insulin in response to rising blood sugar while reducing excess glucagon.
Together these effects produce meaningful, sustained weight loss when combined with a reduced-calorie diet — averaging 14–15% of body weight over 68 weeks in the STEP 1 clinical trial for Wegovy at 2.4 mg.
Branded vs. compounded semaglutide
FDA-approved branded versions (Ozempic, Wegovy) contain pharmaceutical-grade semaglutide manufactured by Novo Nordisk. Compounded semaglutide is made by licensed 503B outsourcing facilities using the same active ingredient but is not FDA-approved as a finished product — it is custom-prepared per prescription.
The key practical differences:
- Cost: Branded versions list for $800–$1,400/month without insurance. Compounded semaglutide from a 503B pharmacy typically runs $100–$350/month, depending on dose.
- Insurance coverage: Branded versions are covered by some plans (Ozempic more so than Wegovy). Compounded versions are almost never covered.
- Availability: Branded versions have faced supply shortages. Compounded versions became widely available through telehealth platforms as a result.
- Dose flexibility: Compounded versions can be customized to your prescribed dose, which is useful during titration.
A telehealth provider can help you determine which option makes sense based on your insurance, budget, and health history.
Who is semaglutide for?
Semaglutide is typically prescribed for adults who meet one of these criteria:
- Weight management (Wegovy / compounded): BMI ≥ 30, or BMI ≥ 27 with at least one weight-related condition (high blood pressure, high cholesterol, sleep apnea, or Type 2 diabetes).
- Type 2 diabetes (Ozempic / Rybelsus): Adults with T2D who need better glycemic control, especially those with established cardiovascular disease.
It is not recommended during pregnancy, in people with a personal or family history of medullary thyroid carcinoma or MEN2, or in those with a history of pancreatitis. A provider evaluation covers all of this before any prescription is written.
Common side effects
The most common side effects of semaglutide are gastrointestinal and typically occur early in treatment while the body adjusts:
- Nausea (most common, especially in the first 4–8 weeks)
- Vomiting
- Diarrhea or constipation
- Stomach pain or bloating
- Decreased appetite (can be a desired effect)
Serious but rare side effects include pancreatitis, gallbladder disease, and a theoretical risk of thyroid C-cell tumors (seen in rodent studies; not confirmed in humans but listed as a black-box warning). Starting at a low dose and titrating slowly significantly reduces GI side effects — your provider will set the right schedule.
How to get semaglutide online
Getting a semaglutide prescription through telehealth is straightforward:
- Complete an intake — answer questions about your weight history, medications, and health conditions. Most platforms take 5–10 minutes.
- Provider review — a licensed physician or NP reviews your information and determines eligibility. No in-person visit is required.
- Prescription sent to pharmacy — if approved, your prescription goes to a licensed 503B compounding pharmacy (for compounded semaglutide) or your local pharmacy (for branded Ozempic or Wegovy).
- Medication delivered or picked up — many compounding pharmacies ship directly to your door. Branded versions can be picked up at any major pharmacy.
Use Rx.com's Ozempic price comparison or Wegovy price comparison to find the best price on branded versions near you.