azelastine [ 4-((4-chlorophenyl)methyl)-2- (hexahydro-1-methyl-1H-azepin-4-yl)-1(2H)- phthalazinone HCl,4-(p-chlorobenzyl)-2-(N-methylperhydroazepinyl-(4))-1-(2H)-phthalazinone,A 5610,A-5610,ASTA Medica brand of azelastine hydrochloride,Afluon,Allergodil,Astelin,Azeptin,Bayer brand of azelastine hydrochloride,Corifina,Dagra brand of azelastine hydrochloride,Loxin,Mann brand of azelastine hydrochloride,Muro brand of azelastine,Optilast,Optivar,Rhinolast,Orion brand of azelastine hydrochloride,Sanfer brand of azelastine hydrochloride,Viatris brand of azelastine hydrochloride,Vividrin akut Azelastin,Wallace brand of azelastine hydrochloride,azelastine hydrochloride ] azeptin is azelastine hydrochloride; structure; eye drop formulation effective in relieving symptoms of allergic conjunctivitis; do not confuse with 5-loxin which is an extract of Boswellia