Where do pharmacies buy their inventory?

Most pharmacies purchase prescription-drug inventory through full-line pharmaceutical wholesalers that consolidate products from many manufacturers into scheduled deliveries. Major U.S. wholesalers include McKesson, Cencora, and Cardinal Health. Independent pharmacies may negotiate through buying groups or group purchasing organizations, while hospital and chain pharmacies frequently use centralized procurement contracts.

Other purchasing channels include:
• Direct supply agreements with pharmaceutical manufacturers
• Specialty distributors for biologics, oncology products, vaccines, and cold-chain medicines
• Authorized generic-drug suppliers
• Medical-device and diagnostic-product manufacturers
• Regional wholesalers for OTC medicines and consumer healthcare products
• Government or institutional tender systems

Supplier authorization is critical. In the United States, prescription drugs should be purchased only from appropriately licensed wholesale distributors. FDA also requires manufacturers, wholesalers, repackagers, and dispensers to work with authorized trading partners and maintain applicable product-tracing information under the Drug Supply Chain Security Act.

Pharmacy buyers should verify wholesaler licenses, product origin, batch traceability, storage conditions, cold-chain controls, remaining shelf life, recall procedures, return policies, delivery frequency, and controlled-substance authorization. Unusually low prices or incomplete transaction records may indicate diverted, counterfeit, stolen, or otherwise illegitimate products.

For international markets, AdvaCare Pharma supplies branded pharmaceuticals, medical devices, supplements, and veterinary products through qualified distribution partnerships.