The active component in Kamagra 100mg, sildenafil, is present in corresponding strength and is a member of the class of medications known as phosphodiesterase type 5 (PDE5) inhibitors. It functions by assisting in the relaxation of the penile blood vessels, which permits blood to enter a man's penis during intercourse. Consequently, Kamagra's primary use is in the treatment of erectile dysfunction in adult men. When a guy cannot maintain or attain a good erection for engaging in sexual activity, he has this problem.