Dipyrone, also known as metamizole, is a pain reliever (analgesic) and fever reducer (antipyretic) that is used to treat moderate to severe pain and fever. It is available in various forms like oral tablets, suppositories, and injections. While widely used in many countries, it has been banned or restricted in some, including the United States, due to concerns about potentially serious side effects like agranulocytosis (a severe reduction in white blood cells).