Which antihistamine is most appropriate for a 22-year-old with allergic rhinitis who did not respond to loratadine 10 mg?

Which antihistamine is most appropriate for a 22-year-old with allergic rhinitis who did not respond to loratadine 10 mg?

• A. Cetirizine
• B. Fexofenadine
• C. Acrivastine
• D. Chlorphenamine

Answer: (C)

When managing allergic rhinitis, different antihistamines can behave quite differently because of variations in how quickly they act and how long their effects last. If one antihistamine like loratadine doesn’t control symptoms, a reasonable next step is to try another agent with a faster onset or different binding characteristics to achieve quicker relief. Acrivastine stands out here because it tends to provide rapid relief, with onset of action often within an hour. This makes it a sensible choice when daytime symptoms such as sneezing, itching, and runny nose are bothersome after loratadine has failed to help. It offers quick control compared with some longer-acting options, so symptoms can be addressed promptly. In contrast, chlorphenamine is more sedating and less desirable for daytime use in a young adult. Cetirizine and fexofenadine are effective and longer-acting, but acrivastine’s faster onset can be advantageous for resolving breakthrough symptoms quickly. If symptoms remain troublesome despite this switch, intranasal corticosteroids are often more effective for ongoing nasal symptoms.

When managing allergic rhinitis, different antihistamines can behave quite differently because of variations in how quickly they act and how long their effects last. If one antihistamine like loratadine doesn’t control symptoms, a reasonable next step is to try another agent with a faster onset or different binding characteristics to achieve quicker relief.

Acrivastine stands out here because it tends to provide rapid relief, with onset of action often within an hour. This makes it a sensible choice when daytime symptoms such as sneezing, itching, and runny nose are bothersome after loratadine has failed to help. It offers quick control compared with some longer-acting options, so symptoms can be addressed promptly.

In contrast, chlorphenamine is more sedating and less desirable for daytime use in a young adult. Cetirizine and fexofenadine are effective and longer-acting, but acrivastine’s faster onset can be advantageous for resolving breakthrough symptoms quickly. If symptoms remain troublesome despite this switch, intranasal corticosteroids are often more effective for ongoing nasal symptoms.