Which medication is NOT a Schedule II controlled substance?

Gabapentin is not classified as a Schedule II controlled substance. It is primarily used to treat neuropathic pain and as an anticonvulsant. While it is important in certain therapeutic situations, it does not have the same high potential for abuse and dependence as Schedule II substances, which include opioids such as oxycodone, hydrocodone, and morphine.

Schedule II controlled substances are characterized by their potential for severe psychological or physical dependence, and they are strictly regulated with specific prescribing requirements. Gabapentin, while it may have some potential for misuse, does not fit the criteria for this high level of regulation, thus placing it outside the Schedule II classification. Understanding these classifications is crucial for pharmacy practice, as they dictate how medications are stored, handled, and prescribed.