The ED curative which is called PDE5 inhibitor such as Viagra is the medicine which is used to normalize the erection function by increasing the penile bloodstream. It is never the medicine which improves aphrodisia itself like the energy drinks and aphrodisiac. However, there are some patients who misunderstand about this and some others are anxious about whether they have to get a constant erection when taking ED curative such as Viagra. But all these aren’t true. The ED curatives such as Viagra, Levitra, Cialis and so on are the medicines to recover a normal erectile function. I usually tell my patients about the condition by saying “Please think of when you were young”. But there are some people who prefer to have the feeling of getting their body heated which is caused by taking Viagra (a kind of side effect), because they can feel emotionally energetic. I can say that it could be mentally effective in a kind of way, too.