Vigora 50 mg is used to treat sexual problems of impotence in men. This medicine is usually taken 30-40 minutes before intercourse. Sildenafil citrate in this medicine works to relax the muscles by increasing blood volume in the penile arteries. This medicine can be taken before or after food. The effect of this medicine lasts for about 36 hours. Alcohol should not be consumed while taking this medicine as it slows down the effect of the medicine. Using this medicine improves your sex life.