Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.
Make sure your doctor knows if you are using any antibiotics.
Make sure your doctor knows if you are using lithium, procainamide (Procanbid®), or quinidine (Quinidex®). Tell your doctor if you are using medicine for seizures such as carbamazepine, phenytoin, Dilantin® or Tegretol®. Make sure your doctor knows if you are receiving magnesium given through a needle placed in one of your veins. Tell your doctor if you have recently received an anesthetic (numbing medicine) given as a shot.