This common over-the-counter drug could be linked to dementia - Antihistamines used to aid sleep and relieve nasty allergy ...

Diphenhydramine is the active ingredient in countless over-the-counter medications. But experts say there are serious risks ...

Certain antihistamines found in common allergy medications and sleep aids are liked to an increased dementia risk. Doctors share what you should take instead.

Hay fever is a common seasonal allergy that many people have to deal with, especially as the allergy season is at its peak.

As spring blooms in May, weed pollen peaks—triggering allergies for millions. Explore the science behind this reaction and ...

It's not always easy to tell the difference between a cold and allergies, including seasonal allergic rhinitis or "hay fever.

Discover commonly overlooked causes of allergic reactions and rashes, from hidden household allergens to unexpected food ...

Two antihistamines, including Zyrtec, are under warning by the FDA after people reported “severe itching” after ceasing ...