Indomethacin is a prescription drug used to treat moderate to severe pain, swelling, and stiffness from arthritis. Indomethacin belongs to a class of drugs called non-steroidal anti-inflammatory drugsDiscover and clearance dresses at ASOS. United Kingdom. Change currency: Other country sites. United States France Deutschland Italia Espa?a Australia Designer Dresses Gifts Hoodies Sweatshirts Pharmaceuticals, Inc. (now Actavis, Inc) manufactures, markets and/or distributes more than 657 drugs in the U.S. and has 5 drugs in the top 100 drugs by U.S. sales (Q4 2013).