Analgesics are medicines that are used to relieve pain. They are also known as painkillers or pain relievers. Technically, the term analgesic refers to a medication that provides relief from pain without putting you to sleep or making you lose consciousness.
Many different types of medicines have pain-relieving properties, and experts tend to group together those medicines that work in a similar way. Two of the most common groups of pain killers are nonsteroidal anti-inflammatory drugs (NSAIDs) and opioids (narcotics).

Drug classes:

• analgesic combinations
• antimigraine agents
• CGRP inhibitors
• cox-2 inhibitors
• miscellaneous analgesics
• narcotic analgesic combinations
• narcotic analgesics
• Nonsteroidal anti-inflammatory drugs
• salicylates