Question

How do antihistamines help with allergies?

Answer 1

Antihistamines work by blocking the effects of histamine, a chemical released by the body during an allergic reaction. Histamine is responsible for causing symptoms such as itching, swelling, and inflammation. By blocking the effects of histamine, antihistamines can help relieve allergy symptoms.

Answer 2

Antihistamines block the effects of a substance called histamine in your body. Histamine is normally released when your body detects something harmful, such as an infection. It causes blood vessels to expand and the skin to swell, which helps protect the body.

Answer 3

Antihistamines work by blocking the action of histamine, a chemical that is released by the immune system in response to allergens such as pollen, dust, or pet dander. Histamine can cause symptoms such as itching, sneezing, runny nose, and hives. By blocking histamine, antihistamines can reduce or prevent these symptoms. Antihistamines are commonly used to treat seasonal allergies, allergic rhinitis, and allergic skin conditions. Some antihistamines may cause drowsiness, while others are less likely to cause this side effect.