It is best not to take painkillers while breastfeeding because they are excreted through the breast milk and thus sucked by the baby. The painkillers themselves can kill white blood cells, and once sucked by the baby, they can have a negative effect on growth and development. If you have any pain, such as joint or muscle pain, you can go to the hospital for examination and use the medicine under the guidance of the doctor. Although breastfeeding is a normal physiological phenomenon, if you do not pay attention to diet and medication, it will affect the growth and development of the baby, so you must be careful with the medication. It is also recommended to strengthen nutrition during breastfeeding, only by strengthening nutrition can the quality of milk be improved, which will be more beneficial to the growth and development of the baby.