Hello, generally, the breasts will become smaller after breast feeding, which has little to do with taking breast feeding medicine. You can eat fried malt, vitamin B6 and other milk-returning drugs. The reason why breasts become smaller is that women consume physical strength during lactation. The fat stored in the body disappears and the body becomes thinner. In addition, some women's breast-feeding time is too long, and the recovery of ovarian function is slow, which reduces the secretion of female sex hormones and causes breast atrophy.