Tell your doctor if sildenafil is not working well or if you are experiencing side effects. Follow your doctor’s orders or the directions on the label. This medicine usually begins to work for erectile dysfunction within 30 minutes after taking it. Also tell your doctor if you have or have ever had pulmonary veno-occlusive disease PVOD; blockage of veins in the lungs ; a stomach ulcer; heart, kidney, or liver disease; a heart attack; heart failure; angina chest pain ; an irregular heartbeat; a stroke; chest pain; high or low blood pressure; high cholesterol; a bleeding disorder; blood circulation problems; blood cell problems such as sickle cell anemia a disease of the red blood cells , multiple myeloma cancer of the plasma cells , or leukemia cancer of the white blood cells ; conditions affecting the shape of the penis e. This medicine comes with a patient information leaflet.Sildenafil (Viagra) Who can and cannot take sildenafil Who can take sildenafil Most men aged 18 and over can take sildenafil for erectile dysfunction. Most adults and children . 25 milligrams (mg) 50 mg mg Typical dosages The following information describes commonly recommended dosages for ED. However, be sure to take the dosage your . Sildenafil (Oral Route) Description and Brand Names Before Using Proper Use Precautions Side Effects Products and services Proper Use Drug information provided by: Merative, .
