There is no data yet in Lactmed on Levocetirizine, Levocetirizine is an isomer of Cetirizine, which is known as Zyrtec here in the US. Because of possible sedation with Cetirizine, it is not the first choice antihistamine for breastfeeding. Lactmed states that Loratadine (Claritin) or Fexofenadine (Allegra) are considered to be safe for the baby, but may adversely affect milk supply if used regularly. 

From Lactmed:
Summary of Use during Lactation: 
Small occasional doses of cetirizine would not be expected to cause any adverse effects in breastfed infants. Larger doses or more prolonged use may cause drowsiness and other effects in the infant or decrease the milk supply, particularly in combination with a sympathomimetic or before lactation is well established. Single bedtime doses after the last feeding of the day may be adequate for many women and will minimize any effects of the drug. The nonsedating antihistamines are preferred alternatives. 

HTH, 
Laura Block, PharmD, CLC
------------------------------

Date:    Tue, 1 Jul 2008 18:51:56 +0200
From:    Jean Ridler <[log in to unmask]>
Subject: Xyzal (levocetirizine)

Help please.  I can't find levocetirizine in my Hale.  I did find some info 
online - it seems to have rather nasty side-effects and I found the 
following:

"FDA pregnancy category B. This medication is not expected to be harmful to 
an unborn baby.  Xyzal can pass into breast milk and may harm a nursing 
baby. Do not give Xyzal to a child younger than 6 years old."

Anyone with some info for me?  Many thanks.

Jean Ridler  RN  RM  IBCLC
South Africa   [log in to unmask] 



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