비아그라에 대해 알아야 할 고려 사항

are allergic to sildenafil, as contained in VIAGRA and REVATIO, or any on the elements in VIAGRA.Will not just take Viagra if you are also using a nitrate drug for chest ache or heart troubles, which include nitroglycerin, isosorbide dinitrate, isosorbide mononitrate, and many leisure medicine for instance "poppers". Getting sildenafil by using a n