Xyzal (levocetirizine): Levocetirizne is the active, l-isomer of cetirizine. When you take plain cetirizine, 50% is levocetirizine, so there is 5mg of levocetirizine in 10mg of cetirizine. In other words, you could just take cetirizine.
Answered 10/3/2016
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Levocetirizine: Xyzal (levocetirizine).
Answered 5/9/2015
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A doctor has provided 1 answer
A doctor has provided 1 answer
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