Nebivolol. Alpha,Alpha'-(Iminobis(Methylene))bis(6-Fluoro-3,4-dihydro)-2H-1-benzopyran-2-methanol . Bystolic . Lobivon . Nebilet . Nebivolol Hydrochloride . R 67555 . R-67555 . Silostar . 67555, R . Hydrochloride, Nebivolol . R67555 . A cardioselective ADRENERGIC BETA-1 RECEPTOR ANTAGONIST (beta-blocker) that functions as a VASODILATOR through the endothelial L-arginine/ NITRIC OXIDE system. It is used to manage HYPERTENSION and chronic HEART FAILURE in elderly patients. . 1.00