The active ingredient in the most popular ED drugs today is tadalafil, which is also found in the impotence medicine Vidalista. Vidalista is made by Centurion Laboratories Pvt. Ltd. in Gujarat, India; they are a pharmaceutical company that strictly adheres to Current Good Manufacturing Practices (CGMP). Vidalista comes in two higher-strength versions, 40mg and 60mg of tadalafil per tablet, both of which are designed for the treatment of severe cases of ED.