- Branded (Ozempic, Wegovy, Mounjaro, Zepbound) are FDA-approved finished products made under FDA manufacturing standards.
- Compounded versions are prepared by licensed 503A/503B pharmacies and are not FDA-approved finished products.
- Key differences: FDA review, sourcing/quality control, possible salt forms, dosing-error risk from multidose vials, and cost.
- Compounding access is tightening in 2026 as shortages resolve and the FDA proposes restrictions.
The core difference: FDA approval
Branded GLP-1s go through the FDA's approval process for safety, efficacy, and manufacturing consistency. Compounded medications don't — they're made for patients by licensed pharmacies, a long-standing and legal practice, but the finished compounded product isn't FDA-reviewed the way a branded drug is. That's the single most important thing to understand, and it's why the labels read so differently.
| Branded | Compounded | |
|---|---|---|
| FDA approval (finished product) | Yes | No |
| Made by | Manufacturer (FDA-regulated) | Licensed 503A/503B pharmacy |
| Active ingredient | Defined base form | Base or salt forms vary |
| Typical packaging | Pen / single-dose | Often multidose vial + syringe |
| Cost (cash, shortage era) | $1,000+/mo | ~$150–$300/mo |
Salt forms and dosing: two real safety points
The FDA has flagged that some compounded semaglutide used salt forms (e.g., sodium or acetate) that differ from the active ingredient in approved products, with unproven safety and efficacy. Separately, multidose vials require patients to measure their own doses, and the agency has tied a meaningful share of compounded-GLP-1 adverse-event reports to dosing errors. Neither point means compounding is inherently unsafe — it means quality, clear instructions, and a reputable pharmacy matter a great deal.
Why people choose compounded anyway
Cost and access. During the 2022–2025 shortages, compounded options were far cheaper than branded cash prices and were available when pens weren't. That's the entire reason a cash-pay compounded market exists.
What to verify before you start
- Which pharmacy fills it, and is it a licensed 503A or 503B facility?
- What active-ingredient form is used (base vs salt)?
- How is the dose delivered, and what error-prevention guidance comes with it?
- What's the all-in price across the full dose range — flat, or does it rise with dose?
- What happens to your plan if compounding access changes?
FAQ
Is compounded semaglutide "fake" Ozempic?
Will my compounded program keep working in 2026?
Sources
- U.S. FDA — compounding guidance and the 2026 503B bulks-list proposal (fda.gov).
- Pharmacy Times — adverse-event totals and compounding market analysis (2026).
- Drugs.com — branded GLP-1 indication and pricing context.