If you notice any modifications to your vision while investing in this drug, call your medical professional or health care professional immediately. Stop applying this medicine and call your doctor right away in case you have a loss of sight within a or both eyes.

Contact you doctor or health care professional immediately if the erection lasts over 4 hours or if it is painful. This may be a manifestation of serious problem and must be treated instantly to prevent permanent damage.

If you have symptoms of nausea, dizziness, chest pain or arm pain upon initiation of sexual acts after using this medicine, you must refrain from further activity and call your medical professional or health care professional without delay.

Do not are drinking alcoholic beverages to excess (examples, 5 servings of wine or 5 shots of whiskey) when using this medicine. When drawn in excess, alcohol can raise your chances of receiving a headache or getting dizzy, replacing the same with heart rate or reducing your blood pressure.
This list might not describe all possible interactions. Give your doctor a list of the many medicines, herbs, non-prescription drugs, or vitamin supplements you use. Also actually tell them if you smoke, are drinking alcoholic beverages, or use illegal drugs. Some items may talk with your medicine.