Buying Viagra in Canada

The impotence treatment drug known as Viagra does increases the risk factors of blindness, this is according to latest research, it identifies about 14 men who have developed the vision problems after being on Viagra. The FDA had also reported it had received about 50 other complaints that men are having the same vision problems due to Viagra. The doctors now believe that Viagra is truly linked to the condition that is known as the NAION or another name is non arteritic anterior ischemic optic neuropathy, this does cause a very rapid loss in vision and could lead to very permanent blindness, since the optic nerves will get swollen and inflamed.

But according to Pfizer, the manufacturer of the Viagra, the cases could be just a coincidence since Viagra is used by well over 20,000,000 men since it was released 7 years ago and only 50 of these cases of becoming blind has been reported. Since Pfizer is in talks with FDA to maybe revising their prescription label on Viagra to maybe mention that very rarely Viagra might cause some blindness in some men. It is very important to know that the men who are taking Viagra have experienced some temporary color change in their vision along with some objects having bluish tinge or their vision becoming very blurred.

Even though the risks for taking the Viagra are truly uncertain as to there being no conclusive evidence had been brought to truly define whether the Viagra actually can causes the blindness. Pfizer, still defending their safety of the drug has stated that in review of the 103 Viagra trials that are involving well over 13 thousand patients, there is no report of the non-arteritic anterior ischemic optic neuropathy have been found. The company will go on to say, there isn't any proof that shows that the NAION would occur more often in the men that are taking the Viagra then the men who do not take this drug. Since the FDA in currently investigating the Viagra and any other anti-impotency and the connections with the NAION, people in medical communities are very skeptical about connections between the Viagra and the blindness.

Concerns about the Viagra and the NAION were initially brought upon by the neuro-ophthalmologist in the U of M, Howard Pomeranz appears to have been the first to make the connection between the two in a patient of his in 1998. The doctor does believe that the Viagra which does alter the blood flow in the key parts ones body that could also be affecting the blood circulation in the optic nerve.

The ones at risk to develop the NAION, would be those who already have very bad eyesight or even have diabetes, or hypertension or even very high cholesterol. None of the systematic disorders would be associated with the eye diseases. They still do play a very important role in the cause of NAION. The natural history of the NAION is truly not known, and the definite relationship could not be established in between these diseases and the Viagra, but caution should really be exercised when taking the drug.

Pfizer Combating Impotence

The dreary disease of impotence deprives the couples of the pleasures of intimate relationship. This disease particularly affects those men who had faced prolonged mental stress or had been exposed to noise pollution for a long time. Impotence in the recent decade has decade has become a major health concern due to increasing patients of this disease all over the world. A number of pharmaceutical companies claim to have developed the drugs which can combat impotence but the drug which kills impotence most efficiently is Viagra which was developed by Pfizer, a well known pharmaceutical company, in 1998.Viagra since its production has helped millions of men who had been suffering from the disease of impotence to get rid of the evilness of this crippling disease.