Natural Viagra? 'Horny Goat Weed' Shows Promise
Move over, Viagra! Researchers in Italy report that an ancient Chinese herbal remedy known as "horny goat weed" shows potential in lab studies as source for new future drugs to
treat erectile dysfunction (ED). The study, which provides scientific evidence supporting the herb's well-known use as a natural aphrodisiac.
In the new study, Mario Dell'Agli and colleagues point out that Viagra (sildenafil) and several other prescription drugs are now available for ED, or male impotence. ED affects
an estimated 18 million men in the United States alone. Studies show, however, that these drugs may cause side effects such as headache, facial flushing, stomach upset, and visual
To find better treatments, the scientists studied herbal extracts reputed to improve sexual performance. Scientists exposed the substances to an enzyme that controls blood
flow to the penis and whose inhibition results in an erection.
Of the extracts tested, "horny goat weed" was the most potent inhibitor of the enzyme. By chemical modification of icariin, the active ingredient purified from the extract, the
scientists obtained a derivative with activity similar to Viagra and a potential for fewer side effects because it targeted the protein more precisely than sildenafil.source :
ScienceDaily (Sep. 30, 2008)
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