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Everyone heard about Viagra, if not by this name, at least "the wonder blue pill" must be familiar to most people. What is its' story? On short terms, "Pfizer", one of the biggest drug-producing companies in the world was testing in its' laboratories a medication against hypertension. The drug had reached the testing-on-patients-stage, but no satisfactory drops in the arterial tension were proved; nevertheless, a lot of male patients, some way past their youthfulness stated strong lasting erections. Researchers realized the drug will not be a successful one on the hypertensive market, but it was promising in another field. Whereas the erection was a secondary effect, they isolated it and made it the primary effect. In a 1999 guide, the World Health Organization recommends Viagra as a treatment against sexual dynamic disturbances (erectile dysfunctions) and admits the efficiency of Viagra. It acts on the relaxing factor nitric oxide present in the body. For centuries, some herbal products have been known to increase men's abilities to perform better and increase sex drive. Over 300 years ago, in the German Pharmacopea there were direct referrals to green oats as "sexual tonics". The Peruvian warriors used maca; "Mapuche Viagra" is used by the people from Chile's Mapuche tribe; nowadays, there are a lot of substitutes for Viagra, or "natural versions" of Viagra, most of them known under the name of "herbal Viagra"- products advertised as treating erectile dysfunctions, formulated to: increase sex drive, boost sexual performances, increase stamina and endurance, fuel and harden erections, quicken recharges. Among the herbal products that exist on the market, a popular one is "yohimbe", that can be a dangerous sexual stimulant if it is used in excessive amounts. "Duro" contains an extract of fungus that comes from the larval remains of silkworms. It is said to benefit women and sportsmen through increased stamina. But these herbal remedies are not subjects to the same standards as the prescription medications, therefore they cannot be endorsed as being "safe". These products that are sold on markets as sexual stimulants contain vasodilators, which are substances that have the role of improving the blood flow by relaxing the walls of the blood vessels. The principle is rather the same as in the case of Viagra. Unfortunately, these herbal remedies may be responsible for causing low blood pressure and restriction of the blood flow to the vital organs. When nitrates, drugs prescribed to lower blood pressure and regulate heart disease, and http://www.sizemed.com/impotence-and-heart-disease.html pharmaceuticals are mixed, they can slow blood flow catastrophically, leading to a heart attack or stroke. There is also evidence to suggest some preparations may be toxic if taken larger doses than those recommended. Also, in the case an erection lasts for more than 4 hours it is recommended to urgently see a doctor. As a conclusion, herbal Viagra is not as safe as its producers claim and its' risks should be taken into serious consideration before trying it. |
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