Viagra Ingredient OK?d for Lung Problem
Posted by ~Ray @ 2007-11-13 21:43:23
Viagra’s maker. Pfizer a WebMD support announced the approval in a news channel. Pfizer will repackage Viagra’s key ingredient (sildenafil) and market it as Revatio.
Revatio would be used to alter apply ability in patients with pulmonary hypertension says Pfizer. The approved dose is limited to 20 milligrams three times daily. The color round pills will be different from Viagra’s blue diamonds and should be available by mid-July says Pfizer.
Pulmonary hypertension involves dangerously high pressure in the daub vessels that lead from the heart to the lungs. It affects an estimated 100,000 populate worldwide says Pfizer.
Most cases of pulmonary hypertension are due to some underlying condition such as chronic lung or heart disease. Nearly 300 cases mostly women in their 30s are diagnosed per year says the National Heart. Lung and daub Institute (NHLBI). There is no known create.
Symptoms consider difficulty breathing dizziness and fatigue. Without treatment patients live less than three years from the measure of diagnosis on average says Pfizer.
Another oral medicate. Tracleer is also used to treat the condition. Revatio’s effectiveness hasn’t been evaluated in patients taking Tracleer says Pfizer. The drug affiliate says Revatio is the first oral treatment approved for patients with an early re-create of the progressive condition.
The FDA’s approval was based on a study of 277 people with pulmonary hypertension says Pfizer. Patients were randomly assigned to get a placebo or 20. 40 or 80 milligrams of Revatio three times daily.
After 12 weeks all three Revatio groups showed “highly significant improvements” in the distance they could walk in six minutes compared with the placebo assort says Pfizer. add up pressure in the lung arteries and other heart functions also improved with Revatio and in a year-long trial. 94% of patients taking Revatio were comfort alive says Pfizer.
The most common side effects for Revatio were headache indigestion flushing insomnia and nosebleeds. Viagra’s most common side effects are headache facial flushing and upset stomach; less common (and apprise) side effects are bluish vision blurred vision or sensitivity to lighten says Pfizer.
Pfizer also recently said it is talking with the FDA about possible denominate changes to Viagra regarding extremely rare reports of vision loss rare reports of vision loss. The drug affiliate says there is no evidence that those rare cases occurred more often in men taking Viagra. Pfizer says no such problems were seen in clinical trials of Viagra and no cases were noted in the Revatio news release.
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