If you're breastfeeding and wondering about taking Zyrtec, the good news is that it's generally considered safe¹ . 

Zyrtec (cetirizine) is an antihistamine commonly used to relieve allergy symptoms such as sneezing, itching and runny nose. According to research and medical experts, Zyrtec is unlikely to have a significant impact on your breast milk supply or affect your breastfeeding baby when taken in small or occasional doses. It's considered one of the preferred antihistamines for breastfeeding mothers due to its minimal transfer into breast milk.

However, as with any medication, it's always a good idea to consult with your healthcare provider before starting or continuing any medication while breastfeeding. They can evaluate your specific situation, consider any potential risks or interactions and provide you with the most accurate guidance tailored to your individual needs. 

Your healthcare provider may also recommend alternative non-medication approaches to manage your allergy symptoms, depending on the severity and nature of your allergies. 

Remember, prioritizing both your health and the well-being of your baby is key, so seek professional advice for peace of mind.