Viagra and Vision Loss: Myth or even Fact

Potenzmittel – the magic blue pill : captured the imagination of the entire world when the US Food and Drugs Administration (FDA) approved it as the 1st prescribed drug for the treatment of impotence problems (ED)or male impotence. The results had been instant. An estimated 23 million individuals have already used this drug and almost every one of them have provided positive feedback. The male patients suffering from sexual dysfunction and their partners have expressed enhanced pleasure due to Viagra.

The Controversy

Amidst all the hoopla that will Viagra generated particularly among the impotent men and their partners, there came some disturbing reports of long term vision loss to some men right after taking Viagra. It all started in 2k when an University of Minnesota ophthalmologist reported the first case of Potenzmittel vision loss. Seven patients, outdated between 50 and 69 years, showed typical features of NAION within 36 hours after taking Potenztabletten.

Non-Arteritic Ischemic Optic Neuropathy (NAION) – also known as “stroke of the vision, ” – occurs when blood circulation is cut off to the optic neural, which injures the nerve and results in permanent vision loss. These cases were published in the March 2005 issue of the Journal associated with Neuro-ophthalmology.
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The experts opined that Potenztabletten regulates a chemical in the body in order to constrict the arteries. This constriction may cut off the blood flow to the optic nerve – especially in individuals with a low cup to disk percentage where the blood vessels and nerves are usually tightly bundled – thus invoking NAION.

FDA’s Take

The FDA is currently investigating 50 cases associated with Viagra vision loss in men who have taken Viagra. In its statement dated July 8, 2005, the FDA advised patients “to prevent taking these medicines (Viagra, Levitra and, Cialis), and call a physician or healthcare provider right away if they encounter sudden or decreased vision loss in one or both eyes. Additional, patients taking or considering using these products should inform their health care professionals if they have ever had severe lack of vision, which might reflect a before episode of NAION. Such individuals are at an increased risk of establishing NAION again. ” The statement further states, “at this time, it is not possible to determine whether these dental medicines for erectile dysfunction were the cause of the loss of eyesight or whether the is actually related to other factors such as high blood pressure or even diabetes, or to a combination of these difficulties. ”

Pfizer’s Take

Pfizer Incorporation. – the makers of Viagra – has shot back and claimed that none of the 103 clinical studies of Viagra showed any signs of NAION. The experts from Pfizer further observed that all the men were in the age group of 50-69 many years. Almost all had health problems including high blood pressure, diabetes, high cholesterol, and a great smoking. These men experienced partial loss of central and/or peripheral eyesight. The loss wasn’t total, meaning the particular men didn’t go blind, but it was permanent in all cases. One particular man described it as “a shade coming down”. One guy had problems in both eyes. Within the rest of the men, only one eye was affected.

Conclusion

We haven’t heard the last word on this controversy yet. However the bottom line is that the doctors are still recommending, cheap Viagra and the patients still buy Viagra despite the warning indicators.

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