비아그라 기본 사항 설명

VIAGRA is made up of sildenafil, which is similar medicine found in another drug termed REVATIO. REVATIO is made use of to deal with a unusual illness called pulmonary arterial hypertension (PAH).an erection that won't go away (priapism). If you have an erection that lasts in excess of 4 hrs, get medical support right away. If It's not at all treat