Vidalista 40 Mg is a prescription medicine that has active ingredient as Tadalafil. Vidalista is a medication that is used to treat erectile dysfunction in men. Vidalista has phosphodiesterase type 5 or impotence in men. It works with increasing blood flow to penis during sexual stimulation. Tadalafil is available with various strengths, very effective taken at-least 30 minutes before sex. The medicine gives erection only if you have sexual stimulation.