비아그라는 더 이상 미스터리
VIAGRA contains sildenafil, which is the same medicine found in another drug known as REVATIO. REVATIO is utilized to treat a rare disease called pulmonary arterial hypertension (PAH). just take any medicines known as nitrates, generally prescribed for chest soreness, or guanylate cyclase stimulators like Adempas (riociguat) for pulmonary hypert