비아그라에 대한 모든 것

The following nonprescription or herbal items may connect with sildenafil: cimetidine (Tagamet HB), St. John's wort. Make sure to Enable your medical doctor and pharmacist know that you will be taking these medications before you start taking sildenafil.an erection that won't go away (priapism). In case you have an erection that lasts more than 4 h