These days I'm listening about the issue of side-effect of sexual pill.some of people became blind due to the use of this pill.could it be possibe such thing generated another body deficiet,because lot's of people use such pill and effect little of bit.Is this possible. :confused:

Hi,
ANY pills (medications) developed by Medical Labs of any type have some side effects; some maybe not too severe, some more severe.
And, these side effects are still being learned, day by day, for all medicines.

A doctor will tell you that you have to decide if the "good" effects outweigh the "bad" effects for you personally.
Any pills are have risks; you have to decide. One of the very best places to find information on any particular pill is to use a search engine/site, such as http://www.google.com; type in the name, then you will have many, many links to read about it. Don't bother reading the manufacturers' comments, cause they want to sell their product, and will rarely tell you everything about it! Only what is required by Federal law. Read opinions from others from these sites.
Best of luck,
fredg