Hydrocodone is a widely used opiate medication in the United States, primarily utilized as an analgesic for acute and chronic pain. It is classified as a Schedule II drug under the Controlled Substances Act due to its potential for abuse and addiction. Hydrocodone is commonly prescribed by physicians to treat a variety of pain-related conditions, such as dental pain, arthritis, and injury-related pain.

The drug is a semi-synthetic opioid and is derived from codeine, which is found in the opium poppy plant. Hydrocodone works by binding to the mu-opioid receptor in the brain, blocking pain signals and producing feelings of relaxation and euphoria. The drug also affects the central nervous system (CNS), slowing down respiration and pulse rate.