비아그라에 대한 5가지 쉬운 사실 설명
Even though sildenafil is not an aphrodisiac, quite a few Gentlemen have discovered them for being extremely productive in having and retaining an erection whilst sexually aroused. an erection that will not go away (priapism). If you have an erection that lasts more than four hrs, get healthcare help at once. If It's not necessarily taken care o