Cenforce 200 mg is commonly called generic Cialis. It is a well-known drug for the treatment of erectile dysfunction in men. In addition, this drug can help in the treatment of allergic diseases. This drug belongs to the PDE5 class of inhibitors in which the active ingredient is sildenafil. This pill helps in relaxing the penile blood vessels which helps in improving the blood flow to the penile area and gives the best results. This is an oral medication that works for up to 36 hours when taken.