Norco, the brand name for hydrocodone, is a generic medication. Generic medications are typically less expensive and more readily available. It is a combination of medications used to treat moderate to severe pain. This drug is only for people who suffer severe or moderate pain. This medication is used to treat those who are in extreme pain due to an accident or significant surgery. This medication provides pain relief for various severe pains, such as cancer pain or arthritis. It is an opioid drug that can lead to habit formation or addiction.