It is not possible to take ibuprofen extended-release capsules during breastfeeding because they are prohibited during breastfeeding. Ibuprofen extended-release capsules are antipyretic and analgesic drugs, which will be metabolized by breast milk and brought to the baby after breastfeeding, and the baby’s metabolic and excretory functions are immature, so the drug will easily accumulate in the body and cause adverse effects. If you have a cold or fever during breastfeeding, you can take oral Chinese medicines, such as oral Chai Hu Oral Liquid or Qing Fever and Cold Granules, etc. for treatment. If you are not feeling well during breastfeeding, you should find a doctor in time and take the medicine under the guidance of the doctor, not to buy the medicine on your own to avoid harming your baby. During the breastfeeding period, the diet should be light, easy to digest, and ensure comprehensive nutrition, in addition to pay attention to keep warm to avoid colds.