It is characterized by abnormally high blood pressures in the
arteries of the lungs. There is a clear need for new treatment
options for patients suffering from this deadly disease.
Orphan drug status allows for 10year market exclusivity and
restricts approval of similar products for the same indication
over the exclusivity period. Viagra is available only from
health care providers and should always be used in accordance
with its approved labeling. Viagra is contraindicated in
patients who use nitrates in any form at any time.
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Sildenafil drug guide
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