Patients with ED report great success with Viagra, Levitra and Cialis. All three drugs have been approved for the treatment of ED by the Food and Drug Administration, and are available through a regular or an online pharmacy.

When you buy ED medications you must understand difference between them.

so here some facts about most known drugs , which where approved for the treatment of ED by the Food and Drug Administration (FDA) :

Before You Take CIALIS Tadalafil

Never forget that CIALIS is a drug,
and that there are strict guidelines for using it effectively and safely.

Study: Viagra may help after heart attack

"Erectile dysfunction drugs can prevent damage in the heart not only when given before a heart attack, as we discovered previously, but also lessen the injury after the heart attack," said Rakesh C. Kukreja, a professor of medicine and chairman of cardiology at Virginia Commonwealth University.

Men buy Viagra without any hesitation today, making Viagra more popular than ever. So what is it about Viagra that has earned it so much reputation worldwide?

Apart from being the first treatment for erectile dysfunction, it was the only treatment for a long time. Men suffering from impotence got hope in the form of Viagra. Their sex life, their marital life, and other spheres of personal and professional life revived with the help of Viagra.

Finally, Viagra not only made erections better but also the lives of men.

Viagra, Levitra, Cialis or some other ED treatment drugs like Kamagra, Silagra, Zenegra or Caverta all work in the same principle i.e. increase blood flow to the penile tissues.

After the infusion of any of these drugs in a patient's body, upon sexual arousal, blood flow to the penile tissues increases which helps one get penile erection and maintain it.

Impotence, or erectile dysfunction (male erecticle dysfunction, ED), can consequence from the whole inability to reach erection, an unconformable power to reach an erection, or the ability to only get a short erection. Reported to the National Institutes of Health (NIH) - 15 million to 30 million mens are affected by ED.

What is the risk factors for erectile dysfunction?
What are the causes of erectile dysfunction?

Erectile Dysfunction - Why Does it Happen?

In 12 percent of men with diabetes, erectile dysfunction is actually the first sign of the diabete.

The researchers found that rates of erectile dysfunction much higher in men with diabetes, however more than 50 percent of men with diabetes in the study reported that they were "never able" or "sometimes able" to achieve and maintain an erection.

Erectile dysfunction commonly acquires in men older than 40 who are affected by one of these conditions. Symptoms come gradually and progress with time. Men with type 1 diabetes are more likely to experience erectile dysfunction at an earlier age, since they've diabetes for a longer time period. Men who have type 2 diabetes, which usually arises in adulthood, may not feel the erection trouble until later in life.