erectile dysfunction
"I have tried all Four meds. Stendra, as advertised, has by far the quickest onset, usually within 20 min and full on in 30 min. Side effects are mild but it is also the weakest. 

For me, Viagra is the strongest with Levitra close behind. Levitra had worst side effects. Cialis is different. Very mild side effects and long lasting. So they all have their place. If I were a single guy frankly I would carry a few of each. stendra if you are in a bind with short notice. Cialis if you need to pull an all night binge. As a married guy viagra is fine and don't be silly and try to hide it from your wife. Generic Rovatio is available ( same as Viagra). Very cheap, ask your doctor."