A member asked:

Is zyrtec and levocetirizine the same medications?

A doctor has provided 1 answer
Dr. John Chiu answered

Levo is more pure: Zyrtec contains both levocetirizine and an inactive mirror-image counterpart. Thus mg for mg , levocetirizine is more potent.

Answered 10/18/2019

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Please describe the medication: zyrtec (cetirizine)?

5 doctors weighed in across 2 answers