비아그라에 대해 알려지지 않은 사실

The following nonprescription or herbal products may connect with sildenafil: cimetidine (Tagamet HB), St. John's wort. You should definitely let your doctor and pharmacist know that you are having these prescription drugs before you start using sildenafil.The most typical Unintended effects of VIAGRA: headache; flushing; upset abdomen; irregular e