Can i drink tylenol (acetaminophen) cold & flu severe while breastfeeding?

Safer not to: The product you describe has acetaminophen(safe), dextromethorpan ( safe), and phenylephrine (decreases milk production) & guaifenesin( probably safe- not studied). Best wld be to use acetaminophen alone for headaches and body aches, and Phenylephrine nasal spray (are less likely to decrease lactation).http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?LACT