Albuterol Sulfate HFA 90 mcg, Inhaler provides rapid relief to animals suffering from difficult breathing caused by restricted airways. A highly effective bronchodilator, when used, it relaxes the airway muscles and allows free airflow. A human-labeled drug, off-label use in animals is typically for the treatment of asthma symptoms and chronic obstructive pulmonary disease in dogs and cars. Please note that each 8.5 gm or 18 gm inhaler requires a vet prescription to purchase. Also, AK and HI do not accept the shipment of this item.