비아그라 구매 전에 알아야 할 사항
VIAGRA includes sildenafil, which is similar medication present in another drug named REVATIO. REVATIO is applied to take care of a exceptional disorder identified as pulmonary arterial hypertension (PAH).The most common Uncomfortable side effects of VIAGRA: headache; flushing; upset tummy; abnormal vision, like alterations in colour vision (includ