No medicine or supplement or specific diet will increase the height beyond that determined by genetics. Secondly,he has hit puberty and his height and weight will increase till 18, and sometimes till 21 years of age. The primary factor determining height is genetics and ethnicity,e.g,Caucasian race is taller and heavier than Asians. All you can do is give him a balanced,healthy diet and plenty of physical activity. In any case,height is NOT the key to a happy,successful life. Good luck.