FDA-Approved vs. Compounded GLP-1 Medications

GLP-1 medications are discussed widely in weight management, but not every product described with a familiar medication name has gone through the same regulatory process. FDA-approved drugs are reviewed before marketing for safety, effectiveness and quality for their approved uses. Compounded drugs are not FDA-approved and do not undergo that same premarket review. Compounding can serve an important medical need for an individual patient in circumstances allowed by law. The key is not to treat “FDA-approved” and “compounded” as interchangeable descriptions.

For an FDA-approved medication, FDA reviews evidence supporting the product’s safety, effectiveness and quality before it is marketed for the approved indication. Approved brand-name and generic drugs also operate within FDA requirements that do not apply in the same way to compounded preparations. A compounded medication is not an FDA-approved generic drug. FDA specifically distinguishes compounded drugs from approved generics.

FDA notes that compounding may be appropriate when an FDA-approved medication cannot meet an individual patient’s medical need — for example, when a patient requires a different dosage form or cannot use a particular ingredient. Federal law also places conditions on when pharmacies and outsourcing facilities may compound drug products. Because rules and availability can change, questions about whether a compounded medication is appropriate should be addressed with the prescribing clinician and dispensing pharmacy.

Clinical trials are conducted using defined products, formulations, doses and study populations. Results from a trial of an FDA-approved semaglutide or tirzepatide product describe what happened with the product and regimen that were actually studied. Those results should not be used to imply that an arbitrary compounded preparation has been shown to produce identical outcomes. This distinction is especially important when reviewing advertising, before-and-after claims or numerical weight-loss comparisons.

With compounded medications, concentration, formulation, directions and measuring devices can vary. Follow the directions supplied for your specific prescription rather than borrowing instructions from another person, another product or an online dosing chart. If the label, measuring device or instructions are unclear, contact the prescribing or dispensing care team before using the medication.

01 Prescription

Confirm what your healthcare provider prescribed.

02 Formulation

Know the medication and concentration that were dispensed.

03 Instructions

Use the directions written for your specific prescription.

04 Measurement

Use the correct amount and measuring device.

05 Monitoring

Know what to watch for and when to contact your care team.