Zyrtec (cetirizine) is generally considered safe to take while breastfeeding. Only very small amounts of cetirizine pass into breast milk, and it has been widely used without causing side effects in breastfed babies. It is one of the preferred antihistamines during breastfeeding due to its low risk of causing drowsiness in both the mother and baby. However, it is recommended to monitor the baby for any unusual sleepiness or feeding issues and consult a healthcare professional if concerns arise.

Safety Summary

• Cetirizine passes into breast milk in small amounts.
• It is unlikely to cause side effects in breastfed infants.
• It is preferred over some other antihistamines that cause more drowsiness.
• Monitoring the baby's response is advised during breastfeeding.

This makes cetirizine a suitable choice for allergy relief while breastfeeding, with medical advice support as needed.