Can Zyrtec Cause Nightmares? Examining Antihistamine Effects on Sleep
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6 min read
While most users experience no significant sleep disturbances from the allergy medication Zyrtec (cetirizine), case reports have documented that it can, in very rare instances, cause or exacerbate nightmares and sleep terrors. This side effect is primarily linked to the drug's impact on the central nervous system, affecting sleep architecture in susceptible individuals.
