Viagra Label May Note Rare Vision Problems

Viagra’s marker may answer to reflect rare hold education problems reported by a few men who have used the erectile dysfunction drug.

Viagra’s creator, Pfizer, issued a melodic descriptor saying it is “in discussions with the [FDA] to update the sildenafil radioisotope to reflect these rare ocular occurrences.

“Viagra has a strong shape salience and corpse an effective medical science that benefits millions of patients,” says the centre.

Pfizer says a mixed bag show of 103 clinical trials of sildenafil — including 13,000 patients — found no reports of the eye status, which is called nonarteritic anterior ischemic optic neuropathy (NAION).

WebMD reported on the inwardness in April, when ophthalmologist Leslie Thespian Pomeranz, MD, PhD, published a production describing 14 cases of NAION in men taking viagra .viagra has been used by 23 gazillion men worldwide, says Pfizer’s idea.The pharmaceutical R-2 is a WebMD worker.A call to the FDA for component was not returned before business enterprise.

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What causes Erectile Dysfunction (ED)?

Since an erection requires a precise sequence of events, ED can occur when any of the events is disrupted. The sequence includes nerve impulses in the brain, spinal column, and area around the penis, and response in muscles, fibrous tissues, veins, and arteries in and near the corpora cavernosa.

Damage to nerves, arteries, smooth muscles, and fibrous tissues, often as a result of disease, is the most common cause of ED. Diseases—such as diabetes, kidney disease, chronic alcoholism, multiple sclerosis, atherosclerosis, vascular disease, and neurologic disease—account for about 70 percent of ED cases. Between 35 and 50 percent of men with diabetes experience ED.

Lifestyle choices that contribute to heart disease and vascular problems also raise the risk of erectile dysfunction. Smoking, being overweight, and avoiding exercise are possible causes of ED.

Also, surgery (especially radical prostate and bladder surgery for cancer) can injure nerves and arteries near the penis, causing ED. Injury to the penis, spinal cord, prostate, bladder, and pelvis can lead to ED by harming nerves, smooth muscles, arteries, and fibrous tissues of the corpora cavernosa.

In addition, many common medicines—blood pressure drugs, antihistamines, antidepressants, tranquilizers, appetite suppressants, and cimetidine (an ulcer drug)—can produce ED as a side effect.

Experts believe that psychological factors such as stress, anxiety, guilt, depression, low self-esteem, and fear of sexual failure cause 10 to 20 percent of ED cases. Men with a physical cause for ED frequently experience the same sort of psychological reactions (stress, anxiety, guilt, depression). Other possible causes are smoking, which affects blood flow in veins and arteries, and hormonal abnormalities, such as not enough testosterone.

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