비아그라에 대해 알려지지 않은 사실
VIAGRA includes sildenafil, which is the same medicine located in A different drug named REVATIO. REVATIO is utilised to treat a rare sickness named pulmonary arterial hypertension (PAH).The most typical Unwanted effects of VIAGRA: headache; flushing; upset stomach; irregular vision, such as changes in colour vision (including possessing a blue col