How long before Zyrtec wears off? A breakdown of its 24-hour effect
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4 min read
According to the FDA, the effects of Zyrtec (cetirizine) typically last around 24 hours, making it a convenient once-daily medication for most people experiencing allergy symptoms. However, the time it takes for the body to fully eliminate the drug and for its complete effects to wear off can vary, impacting the question of how long before Zyrtec wears off.
