Orlistat in clozapine- or olanzapine-treated patients with overweight or obesity: a 16-week randomized, double-blind, placebo-controlled trial
503B Compounding Pharmacy Classifications Federal law distinguishes two types of compounding facilities with different regulatory frameworks: 503A Traditional Compounding Pharmacies: State-licensed pharmacies compounding patient-specific prescriptions under state pharmacy board oversight Can compound during drug shortage periods or for documented patient-specific needs Operate primarily under state pharmacy law rather than FDA pre-market approval requirements May only compound based on individual prescriptions for identified patients Cannot compound large batches for office stock or distribution without patient-specific orders Subject to state pharmacy board inspections with frequency varying by state Must follow USP compounding standards but not full FDA current Good Manufacturing Practices (cGMP) 503B Outsourcing Facilities: Register with FDA as outsourcing facilities accepting higher federal oversight Can produce larger batch quantities for distribution to healthcare facilities Subject to FDA current Good Manufacturing Practice (cGMP) requirements similar to pharmaceutical manufacturers More rigorous quality control expectations including extensive testing protocols More frequent FDA inspections compared to 503A facilities Can distribute compounded drugs without patient-specific prescriptions in some circumstances Generally considered to have pharmaceutical-grade quality assurance standards Many telehealth platforms partner with facilities registered with FDA when available due to quality control considerations, though production costs may affect medication pricing
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References Bock-Marquette, I., Saxena, A., White, M
