Verbatim response from Perplexity
The real difference is that Wegovy is an FDA-approved drug with a standardized, tested formulation of semaglutide base, while compounded semaglutide is an unapproved, custom-made product that may use different salt forms (e.g., acetate or sodium), vary in quality, and include unapproved additives like vitamins[1][2].
Key Differences Breakdown
| Feature | Wegovy (Brand Name) | Compounded Semaglutide |
|---|---|---|
| FDA Approval | Yes; approved for chronic weight management[1][2] | No; not reviewed for safety, efficacy, or quality[1][2] |
| Active Ingredient | Semaglutide base (standardized)[1][2] | May use semaglutide salts (acetate, sodium) not approved for compounding[1] |
| Testing | Extensively tested in clinical trials (up to 15% weight loss)[2][3] | Not tested in clinical trials; safety/efficacy unknown[1][2] |
| Manufacturing | Made in FDA-registered Novo Nordisk facilities with strict quality control[2][4] | Made by state-regulated pharmacies; quality varies by facility[2][4] |
| Ingredients | Consistent inactive ingredients for stability/absorption[2] | May add vitamins (B-12, B-6) or L-carnitine; additives unapproved[1] |
| Dosage Forms | Fixed injectable doses (0.25–2.4 mg); oral pending approval[2][4] | Variable: injections, pills, oral drops, nasal sprays[1][4] |
| Generic Status | No generic exists yet; compounded versions are not generics[4] | Not a "generic Wegovy"; custom formula with no bioequivalence guarantee[4] |
Why This Matters for Safety
- Absorption Risk: The FDA-approved Wegovy oral pill includes specific technology to ensure semaglutide absorption; compounded versions lack this guarantee and may not be effective[5].
- Purity Concerns: Compounded drugs are not subject to the same rigorous purity and potency testing, leading to potential risks of contamination or incorrect dosing[1][2].
- Legal Status: The FDA has explicitly stated that salt forms of semaglutide (like acetate or sodium) are not approved for use in compounding, making many compounded products legally and chemically distinct from Wegovy[1].
Recommendation
If you prioritize proven safety, efficacy, and consistent dosing, Wegovy is the recommended choice. It is the only formulation with clinical evidence supporting its weight-loss results and safety profile[3]. Compounded semaglutide is typically only considered if Wegovy is unavailable due to supply shortages or if a patient has a specific allergy to a Wegovy ingredient and cannot find an alternative approved option, though the safety risks remain higher[3][4]. There are currently no FDA-approved generics of Wegovy on the market[4].