<unk>  is a vasoactive drug used to treat claudication or the symptoms of peripheral arterial disease.  It is currently not approved by the Food and Drug Administration (FDA) for use in the United States.
Currently available as trade name tablet Loftyl
Buflomedil
Pemirolast
Eluxadoline
Clemastine
Orciprenaline
Iotrolan
Azelastine 
Epinastine hydrochloride