Which prescription medication is often used for severe pain and is classified as a Schedule II substance?

Fentanyl is a potent synthetic opioid that is frequently prescribed for the management of severe pain, particularly in patients who develop tolerance to other opioids or have pain that does not respond adequately to less potent medications. As a Schedule II substance under the Controlled Substances Act, fentanyl is recognized for its high potential for abuse and dependency, necessitating strict regulatory control regarding its prescription, distribution, and dispensing.

The classification of fentanyl in Schedule II reflects its medical utility and the serious risks linked to its misuse. Schedule II drugs require a written prescription and are subject to a variety of restrictions designed to prevent abuse. In clinical practice, fentanyl may be administered in various forms, including patches, lozenges, and injectable formulations, making it versatile for severe pain management.

In contrast, the other medications listed do not share the same classification or primary use for severe pain. Dextroamphetamine is primarily used for the treatment of attention-deficit hyperactivity disorder (ADHD). Sertraline is an antidepressant used to treat major depressive disorder and certain anxiety disorders. Cephalexin is an antibiotic used to treat bacterial infections. These medications are not classified under Schedule II and do not indicate the high potential for abuse that is characteristic of fentanyl.