The main drugs to make the penis bigger are testosterone undecanoate, gonadotropins and other drugs that can promote penis development, mainly used to treat short penis caused by androgen deficiency in men’s bodies during childhood. If a man’s penis is short in adulthood, taking the above drugs will have no therapeutic effect, and he will need to undergo penis enlargement and lengthening surgery at this time. If the male body hormone level is normal in childhood, do not take the above drugs, otherwise precocious sexual maturity can occur, causing adverse effects on health. You can also take medications such as Lycium barbarum and Xianmao, which have the effect of tonifying the kidneys and filling the essence, and can promote penis growth and development, which has a good effect on the treatment of penis shortening. When the male penis is short, must promptly to the regular hospital urology or male department to improve the relevant examination, under the guidance of the doctor for treatment.