Which drug schedule requires a physician's information and cannot be refilled?

Schedule II drugs are classified as having a high potential for abuse and are strictly regulated. This schedule requires a physician's prescription, and the prescription cannot be refilled. Patients must obtain a new prescription from their healthcare provider each time they need more medication. This regulation is in place to ensure proper management of these substances due to their potential for addiction and misuse.

In contrast, Schedule I drugs are considered to have no accepted medical use and therefore cannot be legally prescribed at all. Schedule III and IV drugs can be refilled under certain conditions set by healthcare regulations, allowing for easier access compared to the restrictions placed on Schedule II medications.