Oral Jelly Kamagra is most effective for impotence and erectile dysfunction in men. This jelly works effectively if taken 30 minutes or 1 hour before sexual intercourse. This jelly contains an ingredient called oral jelly Kamagra which helps to relax the tissues of men's penis. You can take this jelly before or after meals. This jelly is to be taken only by men above 18 years of age. The effect of this jelly lasts for 4 to 6 hours. Take this jelly as per the doctor's advice