Indomethacin (Indocin®) is an analgesic. It is classified as a nonsteroidal anti-inflammatory drug. These are commonly referred to as NSAIDS. Other NSAIDS are also used as analgesics. Indomethacin can be used as a pain reliever or analgesic. It can also be used as a treatment for arthritis, fever or other conditions where inflammation plays a role in creating the symptoms.