비아그라에 대해 거의 알려지지 않은 사실.
VIAGRA includes sildenafil, which is identical medicine found in another drug referred to as REVATIO. REVATIO is utilised to take care of a rare disease referred to as pulmonary arterial hypertension (PAH).The most common Negative effects of VIAGRA: headache; flushing; upset tummy; irregular vision, for instance changes in shade eyesight (such as u