Sildenafil is a physician recommended medication used to treat ED and PAH. It has a place with a class of medications called phosphodiesterase type 5 (PDE5) inhibitors. A class of medications is a gathering of meds that work in a same way. It works by expanding blood stream to the private area. This helps you get or keep up an erection. Sildenafil 50mg Side effects are blurry vision, nausea, dizziness call your doctor if you have serious side effects. Know more about Sildenafil Side Effects https://bit.ly/2pFIJTy