Metoprolol
Unlike Propranolol, Metoprolol is selective β-1 receptor blocker; Eliminates the unwanted effects of bronchoconstriction (β2- effect). Its potency to block cardiac stimulation is similar to Propranolol & less likely to worsen Asthma, but not entirely safe. It may also be preferred to Propranolol in diabetics receiving insulin or oral hypoglycemic. With increase in dose can …