viagra is prescription only item. And Revatio has the same ingredient of viagra, and used in pulmonary hypertension due to its vasodilatory effect. Viagra is a surprise invention when they are studying the drug's side effect profile.

Revatio is a RX only drugs, basically there is no way you can obtain it.

[此贴子已经被作者于2009-10-19 18:01:40编辑过]