How often must a pharmacy inventory controlled substances?

Pharmacies are required to conduct an inventory of controlled substances at least annually as per federal law and guidelines set forth by the Drug Enforcement Administration (DEA). This annual inventory is essential for maintaining accurate records of controlled substances, ensuring accountability, and helping to prevent diversion and misuse.

The requirement for an annual inventory means that pharmacies must carefully count and document all controlled substances on hand at least once every calendar year. This process supports regulatory compliance and helps prevent discrepancies that could indicate theft, loss, or errors in inventory management.

The other options, while they represent various frequencies, do not align with the regulatory requirements laid out for controlled substances. Monthly inventories, although they could aid in tighter control over stock, are not mandated and could impose an unnecessary burden on pharmacies. Bi-annual inventories, similar to monthly ones, exceed the required frequency, and conducting inventory every five years is too infrequent to ensure proper control and management of these substances. Thus, annual inventory is the minimum standard that would satisfy legal obligations and best practice for pharmacy practice.