Final answer:
The DEA permits prescribers to issue several prescriptions for C2 controlled substances, provided the patient does not receive more than a 90-day supply.
Step-by-step explanation:
The Drug Enforcement Administration (DEA) allows prescribers to issue multiple prescriptions for Schedule II (C2 controlled substances) to be filled sequentially. The DEA stipulates that a patient may not receive more than a 90-day supply of a C2 controlled substance based on these multiple prescriptions.
This is meant to allow patients with legitimate medical needs to have continuous treatment while preventing the abuse and diversion of these highly regulated drugs. Prescribers must follow specific guidelines when writing these prescriptions, such as dating them on the day they are written and indicating the earliest date on which each prescription can be filled.