비아그라에 대한 주요 지침
VIAGRA has sildenafil, which is identical drugs found in another drug referred to as REVATIO. REVATIO is made use of to take care of a scarce illness named pulmonary arterial hypertension (PAH).Sildenafil improves the outcome of NO by inhibiting phosphodiesterase sort five (PDE5), that is chargeable for degradation of cGMP inside the corpus caverno