6Viagra contains the medication sildenafil. It has a place with a class of medications called phosphodiesterase type 5 (PDE5) inhibitors. (A class of medications is a medication that act in a similar way .) Viagra works by expanding blood stream to your penis, which helps you have and keep an erection. However, this drug possibly works assuming that you're physically stimulated.
Viagra comes as tablets that are taken by mouth. Much of the time, it is good to take it before sexual movement, it is required to take it 30 minutes to 4 hours in advance. Viagra is accessible in three qualities: 25 mg, 50 mg, and 100 mg.

This book contains everything one needs to know about viagra and how to use it to cure erectile dysfuction and other related sexual issues