Sildenafil citrate, sold as Viagra, Revatio and under various other trade names, is a drug used to treat erectile dysfunction and pulmonary arterial hypertension (PAH). It was developed and is being marketed by the pharmaceutical company Pfizer. It acts by inhibiting cGMP specific phosphodiesterase type 5, an enzyme that regulates blood flow in the penis. Since becoming available in 1998, sildenafil has been the prime treatment for erectile dysfunction; its primary competitors on the market are tadalafil (Cialis) and vardenafil (Levitra). It is frequently called the 'blue pill'.
Researchers at the University of Pennsylvania School of Medicine say preliminary results of a small study show promise in improving erectile dysfunction (ED) in men who had shown minimal reaction to Viagra.
According to recent research, something as simple as caffeine may be the female version of Viagra.
Viagra (sildenafil citrate), known for improving erectile dysfunction (ED), also effectively treats the prostate and lower urinary tract symptoms (LUTS) associated with prostate enlargement that often occur with ED, a Northwestern University study has found.
Penn State researchers, who analyzed the responses of midlife women, ages 35 to 55, to a survey on body image, have concluded that the emphasis in U.S. culture on being young and thin has a more important influence than menopause on sexual functioning and satisfaction.
German researchers have discovered yet another use for Viagra (sildenafil), they say it relieves the symptoms and improves the circulation of patients with Raynaud's phenomenon.
According to the results of a new study by researchers at Johns Hopkins, Viagra, a drug used to treat erectile dysfunction (ED) in millions of men, reduces the stimulatory effects of hormonal stress on the heart by half.
Sildenafil citrate (Viagra), a drug used to treat erectile dysfunction (ED) in millions of men, reduces the stimulatory effects of hormonal stress on the heart by half, according to results of a new study by researchers at Johns Hopkins.
Chinese men are selectively switching from traditional Chinese medicine (TCM) to Viagra to treat erectile dysfunction, but sticking with tradition for ailments such as arthritis, indigestion and gout, according to new research published in Environmental Conservation.
German researchers have reported on the impact of Viagra on pulmonary hypertension at the Frontiers of Vascular Medicine Conference at Monash University this week.
Researchers have found that one particular simple sugar, present in increased levels in diabetics, interferes with the chain of events needed to achieve and maintain erection and can lead to permanent penile impairment over time.
Normally your kidneys filter about 50 gallons of blood a day, remove such waste as salts and minerals, and concentrate it into urine. When you exercise or don't take in water, your blood "thickens" and instead of removing water, the kidney reverses the process, pulls in water from the body that would normally go into the urine, and puts it into the blood, thus maintaining water balance.
In a review of its popular impotence treatment Viagra, Pfizer announced on Monday that it had found no evidence of increased risk of blindness among patients taking the erectile dysfunction drug.
A preeminent cardiologist reports, for the first time in a large prospective study, that certain of his patients with erectile dysfunction (ED) and heart problems can now safely use erection drugs that help up to 80% of men restore function and quality of life.
Viagra, a drug originally developed to treat heart disease, and now more commonly used to treat impotence, may also help children with a serious heart-lung condition to walk further and breathe more easily.
According to an audit by the state's comptroller, a large number of convicted rapists and other high-risk sex offenders in New York have been getting Viagra on Medicaid for the last five years.
Drug manufacturers are looking at ways to create a "Viagra for the brain", which could alleviate memory loss, one of the distressing symptoms of diseases such as Alzheimer's. Work carried out by Dr George Kemenes, Senior Fellow in the Department of Biology and Environmental Science at the University of Sussex, will hopefully help to show how such drugs could work.
Virginia Commonwealth University researchers have found that the popular impotence drug Viagra prevents damage to the heart from a potent chemotherapeutic agent frequently used in the treatment of breast cancer, leukemia and sarcomas.
One traditional approach to pharmaceutical design uses so-called “first messengers” – hormones, other natural facilitators or synthetic products – to initiate various cellular cascades for the desired physiological effect. To date, despite concerted efforts at all levels of research, this approach has failed to develop a truly successful obesity drug to address this major global health problem.
Virginia Commonwealth University researchers have shown that a widely used drug for treating erectile dysfunction, Viagra, reduces the death of heart cells under heart attack-like conditions in a laboratory model.
A study involving rats reveals the mechanism responsible for learning impairment due to liver failure and shows that sildenafil restores cognitive function.
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