Atenolol is a prescription medication used to treat certain heart conditions such as arrhythmias This betablocker can also be used to lower blood pressure and treat enlarged hearts in cats Atenolol functions by slowing and regulating your pets heart rate to make the heart work more efficiently It is appropriate for use in dogs cats and ferrets Atenolol is a betablocker that lowers heart rate blood pressure and overactivity of the heart thus allowing for a regular heartbeat and better heart function Atenolol is the generic alternative to TenorminOther products from PetCareRx