Question: is xyzal stronger than zyrtec?
Answer: In one of Xyzal Allergy 24HR's commercials, they say that the 5 mg Xyzal is “just as effective as [10 mg] Zyrtec at only half the size”—because it's only one banana versus Zyrtec's two bananas. A potential side effect of Xyzal and Zyrtec is drowsiness, though both are considered non-sedating antihistamines.