Question

What are antihistamines? Give its role in allergic reactions?

Answer 1

Antihistamines:

1. Antihistamines are medicines that are generally used to relieve symptoms of allergies, such as hives, hay fever, conjunctivitis, and reactions to insect bites or stings.

Role of antihistamines in allergic reactions:

1. Antihistamines drugs help to treat conditions that are caused by a large amount of histamine secretion, a chemical created by the body's immune system.
2. It reduces or blocks the histamine which is responsible for the allergy.
3. The antihistamines are also sometimes used as a short-term treatment for insomnia and to prevent motion sickness.