Sildenafil: an oral drug for impotence

Article Abstract:

Sildenafil citrate, marketed by Pfizer as Viagra, seems effective for short-term correction of erectile dysfunction. It is the first oral drug the FDA has approved for this purpose. Sildenafil causes release of nitric oxide, beginning a process which relaxes smooth muscle and allows erection to take place between 30 minutes and four hours after ingestion. It lowers blood pressure which may be a problem in some patients, especially those using nitrate-based medication. In tests, 63% to 82% of the patients had positive response, depending on dosage amount.

Evaluation, Product/Service Evaluation, Impotence, Viagra (Medication)

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Antioxidant vitamins and zinc for macular degeneration

Article Abstract:

Clinical trial results indicate that high doses of beta carotene, vitamin C, vitamin E and zinc delay progression of the age-related macular degeneration and prevent vision loss in elderly patients. Data also reveal side effects of these antioxidants with 8.3% incidence of yellow skin in non-smoking patients, whereas smokers developed lung cancer and even met with death.

United States, Health aspects, Clinical trials, Smokers, Antioxidants, Antioxidants (Nutrients), Skin color, Macular degeneration, Skin colour

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Sildenafil for pulmonary hypertension

Article Abstract:

Oral sildenafil is an effective for treatment of pulmonary arterial hypertension (PAH) as suggested by several case reports. Sildenafil is marketed as Viagra for treatment of erectile dysfunction needs confirmation from a controlled trial.

Care and treatment, Dosage and administration, Pulmonary hypertension, Sildenafil

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