Which class of medications inhibits allergic reactions caused by histamine?

• A. Antihistamines
• B. Antidepressants
• C. Antipyretics
• D. Antianxiety

Answer: (A)

Antihistamines are a specific class of medications that work by blocking the action of histamine, a chemical released during allergic reactions. Histamine is responsible for symptoms such as itching, sneezing, runny nose, and other signs of allergy. By inhibiting its effects, antihistamines help alleviate these symptoms, providing relief to individuals suffering from allergies.

Other medication classes mentioned have different purposes; for instance, antidepressants are used to treat conditions like depression and anxiety, antipyretics help reduce fever, and antianxiety medications are aimed at managing anxiety disorders. None of these directly target the histamine receptors or the mechanisms involved in allergic reactions, which is why antihistamines are the appropriate choice in this context.