Can I take night time theraflu while breastfeeding?

Breast feeding &meds. Theraflu contains three active ingredients: acetaminophen which is safe for breast-feeding moms, phenylephrine which is not believed to be harmful via breast milk to the baby BUT it may decrease milk production. Caution if your baby is a newborn or was premature. The third active ingredient pheniramine may also decrease milk production, but no harmful effects to the infant have been described.