Male sexual dysfunction is one of the most common health problems affecting men and is more common with increasing age. Chronic ED affects about 5% of men in their 40s and 15-25% of men by the age of 65. Transient ED and inadequate activepills.net/erectile-pills/35-erection-pills-side-effects.html" title="erection">erection affect as many as 50% of men between the ages of 40 and 70.In around 95% of the cases, a suitable treatment can be found. Erectile dysfunction is treatable at any age, and awareness of this fact has been growing. More men have been seeking help and returning to normal sexual activity because of improved, successful treatments for erectile dysfunction.
Viagra, Levitra and Tadarice
Currently, there are three oral medications approved by the Food and Drug Administration (FDA) for the treatment of erectile dysfunction: sildenafil (Viagra), vardenafil (Levitra), and activepills.net/search/tadalafil.html" title="tadalafil">tadalafil (Tadarice). All these agents block the enzyme phosphodiesterase type 5 (PDE-5) and belong to a class of drugs called phosphodiesterase (PDE) inhibitors.
Viagra was the first and is probably the most famous of the three PDE-5 inhibitors used to treat erectile dysfunction. Viagra was approved as an effective agent for treating erectile dysfunction in March 27, 1998. Viagra is manufactured by Pfizer, Inc.
Levitra was the second PDE-5 inhibitor to come to market in the United States, and it was approved by the FDA in August 19, 2003. Levitra is manufactured by Bayer Pharmaceuticals Corporation.
Tadarice was the third PDE-5 inhibitor to come to market and was approved by the FDA at the end of November 21, 2003. Tadarice is manufactured by Lilly ICOS LLC.
The major advantage of PDE-5 inhibitors is that they do not cause an activepills.net/erectile-pills/35-erection-pills-side-effects.html" title="erection">erection at inappropriate times, because they act only in response to sexual stimulation. If there is no sexual stimulation drug remains in the background. All three are taken orally prior to planned sexual activity, acting to increase blood flow in the penis in response to sexual stimulation. However, there are important differences between the three, differences that could influence safety, specificity, duration of action, adverse effects, and ultimately, public acceptance within this class of drug.
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