When Pfizer released Viagra in 1998, they revolutionized oral medical management for erectile dysfunction. Along with its rival medications Cialis and Levitra, Viagra has become a popular drug of choice against impotence. However, anti - impotence drugs are not just used by older men anymore. A growing number of men under the age of 55 are using the ‘blockbuster pill’. A study of more than 5 million insured adults in 1998 to 2002 found that the fastest - growing segments of Viagra users were aged 18 to 55. These finding suggest use of Viagra not only as anti - impotence drug but as enhancement or recreational agent.
How does anti - impotence pills like Viagra work? These drugs dilate blood vessels in the genital region leading to an increased blood flow and consequently, erection. However, it does very little to libido, sensation and sensuality. The effects of Viagra are noticed after an hour of taking the pill and the ease of erection lasts up to 12 hours. There may be side effects however such as headaches, flushes, nasal congestion or runny nose, malaise, changes in blood pressure, nausea, irregular heartbeats, and chest pain.
Furthermore, anti - impotence drugs such as Viagra and Cialis increases the risk of vision loss in impotent men who have a history of hypertension and heart failure. Results of a study conducted by scientists at the University of Alabama in Birmingham showed that men who suffered heart attack were 10 times more likely to have optic nerve damage if they had been taking anti - impotence pills. Dr. Gerald McGwin, the one who headed the study, observed that there is a strong and statistically significant association between the use of Viagra and/or Cialis and non - anteritic anterior ischaemic optic neuropathy (NAION). NAION is the most common cause of acute optic nerve damage for people over 50 years old. It can cause the loss of vision in one or both eyes.
There are also other impotent pills in the market which the Food and Drug Administration (FDA) warns the public about. These products, usually available through the internet, illegally contain the same ingredients as the prescription medicines approved by the FDA. Some of the product names listed by FDA are Zimaxx, Libidus, Neophase, Nasutra, Vigor - 25, Actra - Rx, and 4Everon. Tests showed that these products either contain sildenafil, the active ingredient in Viagra, or valdenafil, the active ingredient in Levitra. Dr. Steven Galson, Director of FDA’s Center for Drug and Evaluation and Research, warns that these products threaten the public health because they contain undeclared chemicals similar or identical to the ingredients used in prescription medicines approved by the FDA. Furthermore, because you do not have to consult a doctor to buy this, you may not be aware that these ingredients can have dangerous interactions with drugs prescribed for heart disease, and may dangerously lower your blood pressure.
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