antihistamine medications

Antihistamines are medications that block the effects of histamine, a chemical released by your immune system during allergic reactions. When you encounter an allergen, your body releases histamine, causing symptoms like sneezing, runny nose, itchy eyes, and hives. Antihistamines help reduce these symptoms by preventing histamine from binding to its receptors. They are commonly used for allergies, hay fever, insect bites, and other allergic conditions. Some antihistamines cause drowsiness, while others are non-sedating. They provide relief by targeting the underlying chemical response, improving comfort during allergy seasons or allergic episodes.