Can you take mucus relief while breastfeeding?

It depends...: There are multiple forms of "mucus relief": pe, dm, chest, sinus, etc. Certainly you should check with your pediatrician or ob-gyn first before taking any medication while breast feeding or while being pregnant. However, as a general rule, most breastfeeding mothers may safely take guaifenesin-only products. Determine if your product contains aspartame, as this has been associated with headaches.