Final answer:
A dispensing record must be kept for two years for Schedule II drugs, following the requirements of the Controlled Substances Act and DEA regulations to prevent misuse and ensure compliance with federal law.
Step-by-step explanation:
A dispensing record must be kept on file for two years for Schedule II controlled substances. The Controlled Substances Act (CSA) categorizes drugs into different schedules (I-V) based on their potential for abuse, with Schedule I being the highest and Schedule V being the lowest.
Under the regulations overseen by the Drug Enforcement Administration (DEA), pharmacies are required to maintain accurate records for controlled substances, and this includes a mandatory two-year record retention for Schedule II drugs. These records ensure compliance with federal law and are crucial for the prevention of misuse and diversion of controlled substances.