Suhagra medicine is used to treat impotence in men. The drug contains an active ingredient called sildenafil citrate, which helps relax the muscles by increasing blood circulation in the penile arteries. The effect of this medicine lasts for about 36 hours. Taking this medicine 1 hour before intercourse can help your partner enjoy a stronger erection. The effect of this medicine usually lasts for 3-4 hours. This medicine is for men only.