Hydrocodone is a prescription opioid medication used for the management of moderate to severe pain. It is often prescribed when other non-opioid pain medications are not sufficient to control pain effectively. Hydrocodone works by binding to opioid receptors in the brain and spinal cord, which reduces the perception of pain and provides pain relief. Hydrocodone is usually combined with acetaminophen (also known as paracetamol) in formulations like Vicodin or Norco. The acetaminophen enhances the pain-relieving effects of hydrocodone and helps manage pain and reduce fever.