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VigRx Plus contains Epimedium Leaf also known as “Horny Goat Weed.”
Epimedium has been used for thousands of years as a libido enhancer. According to legend, this herb was discovered by a goat herder who noticed increased sexual activity in his goat after they grazed where the weed was going.
Medical research has discovered that the active ingredient is icariin. Icariin is used to increase erectile function. Another effect of Epimedium is, it allows more blood to flow to the penis. It does this by allowing the nitric oxide levels to increase, relaxing smooth muscles. It also acts as a mild PDE-5 inhibitor. Like Viagra, Epimedium reduces PDE-5 levels, although at a level that doesn't produce unwanted side effects.
For more information on Epimedium visit http://en.wikipedia.org/wiki/Epimedium_sagittatum
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