비아그라에 대한 주요 지침
Stay clear of PDE5 inhibitors When you have a historical past of an eye fixed ailment named non-arteritic anterior ischemic optic neuropathy (NAION). NAION is characterised by the interruption of blood movement on the optic nerve.are allergic to sildenafil, as contained in Viagra® and Revatio, or any of your elements in Viagra®. See the conclusio