비아그라 옵션

Sildenafil belongs to a class of drugs known as phosphodiesterase variety 5 (PDE5) inhibitors. A class of drugs is a gaggle of remedies that get the job done in an analogous way. These medicine are often utilized to treat related ailments.In the event you’ve previously had NAION or have crowded optic disc, you may have an increased danger for NAI