, blood thinners such as Coumadin??, acetazolamide (Diamox??), or pimozide (Orap??).Warnings While Using This MedicineCheck with your doctor before taking quinidine if you have blood, kidney or liver disease, asthma, an infection, psoriasis (a skin disease), or overactive thyroid.Tell your doctor or dentist that you are taking quinidine before you have any kind of surgery.Do not suddenly stop taki