It is very common to seek long-term relief for allergies, but you should not continue taking Montek LC (montelukast and levocetirizine) beyond your prescribed month without consulting your doctor. While both active ingredients are often used for allergies, taking them long-term requires professional monitoring. Prolonged use can sometimes lead to side effects like drowsiness or mood changes. Your doctor can evaluate if this medication is still the best option for you or if a different, safer long-term strategy is better suited for your needs. Please schedule a follow-up to discuss your symptoms safely.