<unk>  (brand Meclomen) is a drug used for joint, muscular pain, arthritis and dysmenorrhea.
It is a member of the NSAID class of drugs and was approved by the FDA in 1980. It inhibits the synthesis of prostaglandins.
Meclofenamic acid
Diclofenamide
Aceclofenac
Diclofenac 
Cyclofenil
Alclofenac
Etidronic acid
Colchicine