Kamagra 100 works by relaxing the patient's muscles that are present in the walls of a man's blood vessels. This action remains specific to a certain part of the male body and helps by increasing blood flow. So, whenever a person is s*xually stimulated, blood starts flowing into the man's penis resulting in a successful erection which is known to last longer. Kamagra 100 is an oral medication that is taken with a glass of water. Kamagra Oral Jelly can be taken with or without food and is known to be very effective if the food taken is not fatty in nature. The main active component of Kamagra tablet is Sildenafil. This active ingredient is a phosphodiesterase type 5 inhibitor or PDE5 inhibitor. cGMP causes rigid penile erections. Thus, it triggers and controls the relaxation and weakening of limb muscles.