Cialis 20 mg filmtabletten contains tadalafil, which belongs to a group of medicines called phosphodiesterase type 5 (PDE5) inhibitors. It is the best way to treat erectile dysfunction and impotence. It works by helping the blood flow into the penis to achieve and maintain a stronger and harder erection when sexual stimulation occurs. It will give you stamina and better performance and also improve libido and testosterone in men. It promotes your sexual activity enjoyable and improves your sex confidence during the sexual drive.