Is Xyzal safe during pregnancy?

What does the evidence say about Xyzal during pregnancy?

1. Xyzal should be used during pregnancy only if clearly needed, according to its own prescribing information, language that reflects an absence of human studies rather than a documented harm. 1
2. More than 1,300 pregnancies exposed to cetirizine, the parent molecule levocetirizine is derived from, showed no increased chance of birth defects, which is why the better-studied version is often the first suggestion. 2
3. Loratadine and cetirizine are named the second-generation antihistamines of choice in pregnancy in a World Allergy Organization review, with chlorpheniramine listed among the acceptable older options. 3
4. Loratadine, the usual alternative if your provider suggests a switch, has not been linked to an increased chance of any kind of birth defect, including hypospadias. 4
5. Somnolence, fatigue, and weakness are reported side effects of levocetirizine, and the label advises avoiding alcohol or other central nervous system depressants alongside it. 1

Is Xyzal safe in each trimester?

• First trimester. Major organs form in these weeks, and levocetirizine on its own has not been studied in pregnancy the way cetirizine has. Because Xyzal delivers the same active molecule found in Zyrtec, many clinicians simply move you across to cetirizine or loratadine early on, where the human data runs into the thousands of pregnancies. Raise the swap before you make it rather than after.
• Second trimester. Allergy symptoms and nasal stuffiness often intensify in the middle months as blood volume climbs and nasal tissue swells. Nothing about levocetirizine changes at this stage, though its label still says to use it in pregnancy only if clearly needed. That phrasing reflects thin data rather than a known harm, so if it is working well for you it is worth asking whether staying put makes sense.
• Third trimester. Levocetirizine makes some people sleepy, and the label warns against driving or operating machinery until you know how it lands for you. That warning carries more weight late in pregnancy, when fatigue is already heavy. The label also advises against use while nursing, so bring your feeding plan into a late-pregnancy visit instead of sorting it out after delivery.