An object of the present invention to provide therapeutic compositions and methods for the prevention and/or treatment of airway obstructive disorders that involve bronchial hyper-responsiveness (BHR), asthma, horse asthma, airway remodeling that potentiate BHR, and any other airway obstructive disorders that involve bronchial smooth muscle (BSM) constriction or possibly other airway smooth muscle (ASM) constriction in a subject in need thereof. Compositions and methods for targeting HCN channels in airway smooth muscle to treat and/or prevent asthma and asthma-like conditions are disclosed. The compositions and methods include administering a therapeutically effective amount of HCN channel blocker, preferably ivabradine hydrochloride, to a subject in need thereof.