비아그라의 기본 원리
Viagra® and generic Viagra® comprise sildenafil, which is identical drugs found in Yet another drug identified as Revatio®. Revatio® is applied to take care of a uncommon disorder identified as pulmonary arterial hypertension (PAH).Grapefruit and grapefruit juice may possibly communicate with sildenafil and produce unwanted Negative effects. Ke