Cialis (tadalafil) is a highly-efficient prescribed medication utilized to address male impotence. If any one of your relative had any eye issues, specifically retinitis pigmentosa, taking this medicine could not be totally secure for you, as you could experience a significant yet very unusual negative side effects - vision loss. Such moderate and brief side impacts as problem, heartburn, facial flushing, looseness of the bowels, indigestion, soreness, flushing and cough can be dismissed if they do not change in magnitude over time. In fact, most of the times they are probably to go away alone. More major adverse effects that have to be reported to your medical professional as quickly as possible to stop them from becoming worse consist of lightheadedness, breast pain, hives, breakout, supplanting the ears, priapism, reduction of vision, loss of hearing and obscured eyesight.