That seems to be only for first generation, drowsy-making, tablets. Second gen formulas don't cross over the blood/brain barrier.

https://www.myalzteam.com/resources/zyrtec-and-alzheimers-me...

There IS one year-old finding that suddenly stopping Zyrtec after daily 3-month use may lead to nasty itching, and if that happens you can re-start and then taper off. https://www.fda.gov/drugs/drug-safety-communications/fda-req...