Sildenafil acts as an active ingredient in Filagra. Filagra is taken 1 hour before intercourse, Filagra is one of the best tablets for impotence. Filagra is a drug curry similar to other ED pills but more expensive to make. Millions of men around the world have their best tablets with the use of Filagra. If you are also suffering from a sex related problem get it resolved soon, otherwise side effects may occur.