Montair FX Tablet is a combination medication that is used to treat allergy symptoms such as runny or stuffy nose, sneezing, watery eyes, and congestion. It contains two active ingredients: Montelukast and Fexofenadine. Montelukast works by blocking the action of leukotrienes, which are chemicals released by the body during an allergic reaction. Fexofenadine works by blocking histamine, which is also released during an allergic reaction. By blocking these substances, Montair FX Tablet reduces the symptoms of allergies.This medication should be taken with or without food, as directed by your doctor. The dosage and duration of treatment will depend on your medical condition and response to the medication. It is important to continue taking this medicine for as long as your doctor recommends. If you stop treatment too early, your symptoms may return, and your condition may worsen.Montair FX Tablet may interact with other medications, so it is important to inform your healthcare team about all other medications you are taking. The most common side effects of this medication include nausea, diarrhea, vomiting, skin rash, flu-like symptoms, and headache. If you are concerned about any of these side effects, contact your doctor immediately.This medication may cause dizziness and drowsiness, so it is important to avoid driving or any activity that requires mental focus until you know how this medication affects you. Drinking alcohol while taking Montair FX Tablet can worsen drowsiness, so it is best to avoid alcohol while taking this medication.It is important to never recommend your medication to another person or support self-medication. You should drink plenty of fluids while taking this medication. Inform your doctor if you have liver or kidney disease before starting this medication, and if you are pregnant, planning to become pregnant, or breastfeeding. Your doctor will need this information to make any necessary dosage adjustments and plan your overall treatment.