What is a characteristic action of Fexofenadine?

Fexofenadine is classified as a non-sedating antihistamine, which is a key characteristic that distinguishes it from older antihistamines that often cause drowsiness. Non-sedating antihistamines like fexofenadine are designed to alleviate allergic symptoms, such as hay fever and urticaria, with minimal impact on the central nervous system. This means they can be taken during the day without impairing cognitive functions or drowsiness, making them preferable for individuals needing to remain alert and functional throughout daily activities.

The non-sedating nature of fexofenadine is particularly beneficial for those who operate vehicles or engage in tasks requiring attention, as it does not bind well to the receptors in the brain that are involved in sedation, unlike first-generation antihistamines. This characteristic allows patients to manage their allergy symptoms effectively without the sometimes debilitating side effects associated with sedating medications.