The active ingredient Sildenafil Citrate is found in kamagra 100mg. Used to treat men suffering from erectile dysfunction. The effect of this drug lasts for 4 to 6 hours. kamagra 100 can be taken orally with water and once a day. Take this medicine one hour before sexual intercourse. This medicine can be taken with or without food. If you want to take kamagra tablet with food, take this medicine with nutritious food.