Painkillers, also known as analgesics, are medications that are used to relieve pain. There are several different types of painkillers, including nonsteroidal anti-inflammatory drugs (NSAIDs), acetaminophen, and opioids. NSAIDs, such as ibuprofen and naproxen, work by reducing inflammation and swelling. They are often used to treat headaches, muscle aches, and pain caused by inflammation. It is...