To help alleviate the symptoms of a cold while breastfeeding, besides Tylenol, you can try using saline nasal rinses like Hydrasense, Sinus rinse, or Salinex for congestion. For fever and headache/sore throat, Tylenol (acetaminophen) is safe to use while breastfeeding. Drinking plenty of water can help with coughing by soothing the throat and thinning out mucus. If your symptoms persist for more than 7-10 days or if you have a fever lasting more than 48 hours despite Tylenol, or if you have green/dark yellow nasal discharge, it is recommended to see a doctor for further evaluation.