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Why should older people not take Zyrtec?: Key considerations and safer alternatives

While Zyrtec (cetirizine) is a second-generation antihistamine with a favorable safety profile compared to older versions like Benadryl, older adults are more susceptible to certain side effects. It is crucial to understand **why should older people not take Zyrtec** without caution, as age-related changes in metabolism and potential drug interactions can increase risk.