Tritoqualine is primarily used as an antihistamine, effectively managing symptoms associated with allergic reactions. It works by blocking the action of histamine at H1 receptors, which helps alleviate conditions like nasal congestion, sneezing, and itching caused by allergies. Additionally, it is utilized in the treatment of certain dermatological conditions, providing relief from skin irritations and rashes. Its application extends to addressing symptoms of hay fever and other seasonal allergies, improving overall comfort for affected individuals.