Theoretically you can take oseltamivir while breastfeeding, and the low level of oseltamivir in breast milk will not affect the baby, but breastfeeding is not recommended during the flu as it can transmit the flu to the baby. Oseltamivir is an antiviral drug that is mainly used for the treatment of influenza A and B. It is not recommended for infants. According to relevant authoritative information, although oseltamivir and its metabolites are metabolized through breast milk, they are below the therapeutic dose for infants due to their very low concentration. Therefore, in general, it is possible to take oseltamivir as prescribed by the doctor for those who have severe symptoms of influenza during breastfeeding. However, breastfeeding is not recommended for mothers who have the flu, because breastfeeding at this time may transmit the flu to the infant. In addition, because influenza is a self-limiting disease, so even if the condition is mild, even without medication, many patients can be cured within 3 to 14 days, patients who do not take medication need to closely observe their own condition, if there are signs of aggravation need to be promptly consulted. Breastfeeding patients with influenza need to strengthen the daily life management, if necessary, need to go to the hospital, strictly comply with the doctor’s prescription medication. They should maintain good personal habits, exercise properly, strengthen their physical fitness and immunity, and keep the indoor environment clean.