Does Zyrtec cause dementia

There is currently no strong evidence to suggest that Zyrtec (cetirizine), an antihistamine used for allergy relief, directly causes dementia. Some studies have raised concerns about the potential cognitive effects of certain antihistamines, particularly first-generation ones, but Zyrtec is a second-generation antihistamine that is less likely to cause sedation and cognitive impairment. However, if you have concerns about long-term use or specific health conditions, it's best to consult with a healthcare professional.