The safety of Spiroflut Nasal Spray (fluticasone) during breastfeeding is not fully established. While intranasal fluticasone is generally considered to have very low systemic absorption and negligible transfer into breast milk, it is still important to be cautious. If you are breastfeeding, you should talk to your doctor before using this medicine. Your doctor may recommend it only if the expected benefits outweigh any potential risks to you or your baby. Do not start or continue it without medical advice.