With Viagra, if you have a painful erection or an erection that lasts longer than four hours, seek medical attention right away. If left untreated, it may result in permanent problems. Revatio and ...

in adults who are temporarily unable to take oral Revatio. Give by IV bolus injection. Advise patients to seek immediate medical attention for a sudden loss of vision or hearing while on therapy.

An attempt by Pfizer to extend the uses of its pulmonary artery hypertension (PAH) drug Revatio into a new paediatric indication has had a major setback. Revatio (sildenafil citrate ...

Sildenafil is the generic equivalent of Pfizer’s Revatio, which is indicated for the treatment of pulmonary arterial hypertension in adults, to improve exercise ability and delay clinical worsening.