Sildenafil citrate is found in kamagra 100mg of as a generic brand. Used to treat men suffering from erectile dysfunction. The effect of this drug lasts for 4 to 6 hours. Take kamagra 100 orally with water. You can take kamagra tablet with or without food. If you want to take this medicine with food, take this medicine with nutritious food. So you can see the good effect of this medicine.