This drug works by relaxing the muscles that are present in the penis of a man. The mechanism of erection works by the production of nitrogen monoxide in the body of a person. It is normally released due to the sexual stimulation of a man. This process is interfered with by the phosphodiesterase type 5 which is inhibited by the use of Sildenafil, which is an active ingredient present in the drug Kamagra Gold. The inhibition of PDE-5 helps in releasing cGMP that helps the muscles present in the penis to relax, hence causing the erection to take place smoothly. The soothing of muscles down there increases the size of the penis as more blood starts to flow into it. This is how the mechanism of this drug works and helps people who are not able to get a proper erection at the time of sexual intercourse.