Stop taking sildenafil and get medical help right away if these effects occur.
You may report side effects to Health Canada at 1-866-234-2345.
In the US -Call your doctor for medical advice about side effects.
You may report side effects to FDA at 1-800-FDA-1088 or at gov/medwatch.
Before taking sildenafil, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies.
This product may contain inactive ingredients, which can cause allergic reactions or other problems. Before using this medication, tell your doctor or pharmacist your medical history, especially of: heart problems (such as heart attack or life-threatening irregular heartbeat in the past 6 months, chest pain/angina, heart failure), stroke in the past 6 months, kidney disease, liver disease, high or low blood pressure, a severe loss of body water (dehydration), penis conditions (such as angulation, fibrosis/scarring, Peyronie's disease), history of painful/prolonged erection (priapism), conditions that may increase the risk of priapism (such as sickle cell anemia, leukemia, multiple myeloma), eye problems (such as retinitis pigmentosa, sudden decreased vision, NAION). Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).