No payment accepted from any clinic or pharmacy listed. No referral fees, no coupon codes, no partnerships.How we make money
← GLP Success
Glossary

Terms, defined plainly.

The regulatory and clinical vocabulary that comes up across this site, defined in plain language.

503A pharmacyA pharmacy that compounds a specific preparation against a specific, valid prescription for a named patient.503B outsourcing facilityA facility that can compound in larger batches ahead of a specific prescription, under current Good Manufacturing Practice (cGMP) standards.API sourcingWhere a compounder's active pharmaceutical ingredient — the actual semaglutide or tirzepatide, not the finished product — comes from.Asynchronous careA telehealth visit conducted via questionnaire and clinician review rather than a live video or phone call.Auto-renewalA subscription that bills and ships automatically on a recurring schedule unless cancelled.Compounded semaglutideA compounding pharmacy's version of semaglutide, the active ingredient in brand-name Ozempic and Wegovy.Compounded tirzepatideA compounding pharmacy's version of tirzepatide, the active ingredient in brand-name Mounjaro and Zepbound.Compounding pharmacyA pharmacy that prepares customized medications rather than dispensing pre-manufactured products.Drug shortage listThe FDA's public database of drugs in confirmed shortage.FDA warning letterA formal notice the FDA issues when it determines violations are serious enough to warrant one, a step up from a Form 483.Form 483A list of inspectional observations the FDA issues after a facility inspection, before deciding whether further action (like a warning letter) is warranted.GLP-1 receptor agonistA class of medication that mimics the GLP-1 hormone, slowing gastric emptying and reducing appetite.Informed consentA patient's agreement to treatment after being told the material facts — including, for compounded GLP-1s, that the product is not FDA-approved as a finished drug.NABPThe National Association of Boards of Pharmacy.Off-labelPrescribing an FDA-approved drug for a use, dose, or population not specifically approved by the FDA.PCAB accreditationA voluntary third-party audit of a compounding pharmacy's practices against national standards, run by the Pharmacy Compounding Accreditation Board.Program feeA recurring charge bundled separately from the medication cost itself — sometimes covering platform access, coaching, or clinician review.TitrationThe gradual increase of a medication dose over time.