In 1998, Viagra was the first effective oral medication to show efficacy in the treatment of ED. After certain time Levitra and Cialis were approved by the FDA. All three of these medications work in a similar manner by blocking the breakdown of the enzyme, cyclic GMP, which is responsible for the smooth muscle relaxation and trapping blood in the penile tissue when a man is sexually excited.
But there are also some side effects of using the ED drugs like Viagra, levitra and cialis. Our survey shows it as :
Viagra Levitra Cialis
Headache 16% 15% 15%
Flushing 10% 11% 03%
Indigestion 10% 04% 10%
Abnormal Vision 03% 0% 0%
Back Pain 0% 0% 06%
Besides this there is a medical condition called Non-Arteritic Anterior Ischemic Nueropathy that I will refer to as NAION. This is a rare condition where disruption of the blood supply to the optic nerve causes damage to the nerve. The injury can cause decreased visual acuity and in some cases, blindness.
Also if the erection lasts longer than 4 hours then also it’s the side-effect of the drug. This condition is known as priapism. The reason priapism is serious is any erection lasting more than two hours can create permanent scarring of the erectile tissue, making future potency difficult or impossible.
So in order to have a safe sexual life full of pleasure consult your doctor before reaching to any decision. Play Safe!