Learn how to choose the right over-the-counter antihistamine for allergies-without the drowsiness. Compare Zyrtec, Claritin, Allegra, and Benadryl with real-world tips and safety guidelines.
First-generation antihistamines like Benadryl may increase dementia risk in older adults due to anticholinergic effects. Learn which drugs to avoid, safer alternatives, and what the latest research really says.