For treatment of erectile dysfunction: For oral dosage form tablets : Adults up to 65 years of age—50 milligrams mg as a single dose no more than once a day, 1 hour before sexual intercourse. What alternatives can I use for erectile dysfunction? Children 1 year of age and older weighing 20 kg or less—10 mg 3 times a day. The most common side effects are headaches, feeling sick, indigestion and dizziness. Your healthcare provider may also order blood tests and collect a urine sample to look for health problems that may cause ED.In most males,* Viagra works within 1 hour after it’s taken. It’s possible that Viagra can begin working within 30 minutes of being taken. But other times, it may take up to 4 hours to start. Sildenafil (Viagra brand) only works following sexual stimulation. It works within 30 to 60 minutes, but may be taken up to four hours before sexual activity. Sildenafil (Revatio . Ad93% of users reported improved confidence in achieving an erection from using Eddie. ED Treatment without doctor’s visits, injections, or surgical implants. Get Eddie for EDK+ visitors in the past monthFree Resizing · Money-Back Guarantee · Free Shipping · Designed by UrologistsCourses: Physical Vs Mental ED, Learning About ED, Product and more.