The normal tissues and organs of the human body are not completely symmetrical, so if there is a slight difference between the breasts on both sides, it is considered a normal situation, due to the reason that the nucleus of the breast is not completely symmetrical during the development of the mammary gland, or it may have a slight effect on the development of the left side of the breast due to a long time of lying on the left side. If you are in the development period of puberty, you don’t need to worry too much, you can basically be symmetrical after the end of development, or you can treat the smaller side with massage, if there is still a mild difference after the end of puberty development, you can choose the corrective treatment of corset. Only when the difference between the two sides of the mammary glands is more obvious and seriously affects the normal aesthetics is surgery recommended, you can do a side of the breast augmentation surgery, there is no special drug can play a role in breast augmentation, it is not recommended to use drugs to treat, try to go to the regular hospital mammary department consultation.