Montelukast with Fexofenadine is a combination medication used to manage allergic symptoms, particularly seasonal allergies. Montelukast is a leukotriene receptor antagonist that helps control symptoms like sneezing and runny nose, while Fexofenadine is an antihistamine that reduces allergic reactions. This combination can provide comprehensive relief for allergy sufferers. Consult a healthcare professional before use, especially if you have underlying health conditions or are taking other medications.