Breastfeeding is the optimal form of infant nutrition in the first few months of life. However, women who are taking medication may be concerned because they fear that the child may be exposed to the drug that is excreted in breast milk and harms the baby. Therefore, an understanding of drug use during lactation and the health of the infant, which drugs are excreted in breast milk, and the determinants of treatment, both help achieve a cure for the mother's disease. , while helping to fulfill the sacred task.