Fexofenadine HCl and Montelukast Tablets are used for the management of allergic conditions such as allergic rhinitis, seasonal allergies, and chronic urticaria (hives). Fexofenadine is a non-drowsy antihistamine that relieves symptoms like sneezing, runny nose, and itchy eyes, while Montelukast helps reduce inflammation and allergic responses in the airways. Together, they provide effective and long-lasting relief from allergy symptoms.