The use of painkillers is not recommended for breastfeeding because some of the ingredients in painkillers will be absorbed through the skin and secreted into the breast milk, thus affecting the baby to a greater or lesser extent, and most of the painkillers are not clinically proven to be safe for use on breastfeeding women. However, if the mother has already breastfed after applying the pain relieving cream, there is no need to be overly nervous and worried, and you need to pay attention to the baby’s situation. Therefore, it is recommended that women with localized discomfort should not blindly use painkilling creams, but go to a regular hospital to find out the cause of the pain, and can use some physical methods, such as physiotherapy and massage to reduce pain. If you insist on using painkilling creams, it is recommended that you stop breastfeeding for a while so as not to affect your baby.