What is the role of a "wholesaler" regarding controlled substances?

The role of a wholesaler regarding controlled substances is accurately defined as a supplier that purchases and resells controlled substances. Wholesalers act as intermediaries between manufacturers and retailers, including pharmacies, by buying large quantities of controlled substances and distributing them to different entities.

This function is crucial for ensuring that pharmacies and healthcare providers have access to the medications needed for patient care while also adhering to regulatory standards established by the Drug Enforcement Administration (DEA). Wholesalers must maintain proper records, comply with security measures, and follow regulations related to the handling and distribution of controlled substances to prevent misuse and ensure accountability within the supply chain.

In contrast, the other options describe different functions unrelated to the wholesaler's specific role. Retailers sell directly to consumers, emergency medical supply providers focus on different supplies, and pharmacies primarily dispense medications based on prescriptions rather than acting as a supplier of controlled substances. This distinction highlights the wholesaler's unique position in the controlled substances market.