Montelukast Oral belongs to Leukotriene Receptor Antagonist (LTRAs). This drug is used for the prevention and treatment of asthma, allergic rhinitis, hay fever, exercise-induced bronchoconstriction (EIB) and seasonal allergy-associated symptoms such as sneezing, runny nose, fever, wheezing and itching. The side effects of Montelukast Oral include - Headache - Stomach ache - Body ache - Fatigue and exhaustion - Heartburn - Diarrhea - Voice changes - Pain and swelling around eyes, ears and cheekbones - Difficulty in breathing - Difficulty in swallowing - Dry throat There is no information about the interaction of Montelukast Oral with other drugs. However, consult a physician or pharmacist before use.