비아그라에 대한 소문
The next nonprescription or herbal items could communicate with sildenafil: cimetidine (Tagamet HB), St. John's wort. Make sure to Allow your medical doctor and pharmacist know that you're using these drugs before you start using sildenafil.The most common Negative effects of VIAGRA: headache; flushing; upset stomach; irregular vision, such as adju