Compared to some other antihistamines, cetirizine has less chance of causing drowsiness for the mother or the baby. For this reason, cetirizine may be preferred for breastfeeding over antihistamines that do cause sleepiness. With repeated use, babies should be checked for signs that they are not overly drowsy.

Likewise, is it safe to take Zyrtec while pregnant? Many allergy drugs may be fine to keep taking during pregnancy, but have the discussion so you can have peace of mind. Oral antihistamines, like cetirizine (Zyrtec), chlorpheniramine (Chlor-Trimeton), diphenhydramine (Benadryl), fexofenadine (Allegra), and loratadine (Claritin) seem to be safe.

Subsequently, question is, does Zyrtec decrease milk supply?

Effects on Lactation and Breastmilk Antihistamines in relatively high doses given by injection can decrease basal serum prolactin in nonlactating women and in early postpartum women. The prolactin level in a mother with established lactation may not affect her ability to breastfeed.

Does allergy medicine affect breast milk supply?

Most allergy medicines arent believed to affect a nursing baby, but Benadryl would not be the first option recommended to a breastfeeding mother. The active ingredient, diphenhydramine, can affect a baby.