Which class of medications is frequently used to manage allergies and allergic rhinitis?

• A. Beta-blockers
• B. Antihistamines
• C. Proton pump inhibitors
• D. Diuretics

Answer: (B)

Antihistamines are the class of medications commonly used to manage allergies and allergic rhinitis because they work by blocking the action of histamine, a substance released during an allergic reaction. Histamine plays a significant role in triggering allergy symptoms such as sneezing, itching, runny nose, and watery eyes. By inhibiting histamine's effects, antihistamines provide relief from these symptoms and are effective in treating various allergic conditions.

In contrast, beta-blockers primarily affect cardiovascular conditions by blocking adrenergic receptors, and are not designed for managing allergic reactions. Proton pump inhibitors are used to reduce stomach acid and are primarily indicated for conditions like gastroesophageal reflux disease (GERD) rather than allergies. Diuretics, which promote the excretion of water and salts through urine, are mainly used to treat conditions like hypertension and edema, and do not address the underlying causes or symptoms of allergies.