Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.
Tell your doctor if you are using any medicines that make you sleepy. These include sleeping pills, cold and allergy medicine, narcotic pain relievers, and sedatives.
Make sure your doctor knows if you are using antacid medicines, medicine for depression (such as amitriptyline, doxepin, nortriptyline, Elavil®, Pamelor®, or Sinequan®), or phenothiazines (such as Compazine®, Phenergan®, Serentil®, or Thorazine®). Tell your doctor about all other medicines you are using.
Make sure your doctor knows if you are pregnant or breast feeding.
Make sure your doctor knows if you have lung disease such as emphysema, an overactive thyroid gland, an enlarged prostate gland, asthma, allergies, heart disease, heart failure, high blood pressure, heart rhythm problems, or Parkinson's disease.
This medicine may make you dizzy or drowsy, or cause blurred vision. Avoid driving, using machines, or doing anything else that could be dangerous if you are not alert or cannot see well.
This medicine may make your eyes sensitive to light. Wear sunglasses if you go outside.
This medicine may make you sweat less and cause your body to get too hot. Be careful in hot weather, especially if you are exercising or working.
Make sure any doctor or dentist who treats you knows that you are using this medicine. This medicine may affect the results of certain medical tests.