비아그라에 대해 알려지지 않은 사실
The following nonprescription or herbal items might interact with sildenafil: cimetidine (Tagamet HB), St. John's wort. Be sure to Enable your health care provider and pharmacist know that you will be using these medications Before you begin taking sildenafil.Sildenafil boosts the influence of NO by inhibiting phosphodiesterase kind five (PDE5), wh