Due to individual differences, it is not possible to determine which medication is useful for penis enlargement; only small penises caused by sex hormone secretion disorders can be treated with medication, which mainly includes chorionic gonadotropin and so on. Some men may realize that their penis is small, but the actual length is within the normal range; at this time, they can go to the hospital for medical consultation, and if the doctor diagnoses that the penis is of a normal size, then there is no need to use medication to treat it. However, if the penis is small due to hypogonadotropic hypogonadism, chorionic gonadotropin and gonadotropin-releasing hormone should be used to treat the condition. In the case of hypergonadotropic hypogonadism, testosterone-based preparations are prescribed for treatment. If necessary, men can also have a penile prosthesis placed to increase the length of their penis. If you feel you have a small penis, you can visit a hospital to get a clear diagnosis and follow your doctor’s instructions to choose the right treatment.