How long should I continue Levocet M for itchy throat?

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• Your symptoms seem to suggest that you are suffering from allergy. Levocet M (Levocetirizine and Montelukast) is given for the same purpose. It is true that the medicine should be taken for a few months regularly. It has minimal side effects, like dryness of mouth, drowsiness and daytime sleepiness. It is advised that you take Levocet M in the night and avoid driving after taking the medicine. Ideally, I would like to see your nose using nasendoscopy, which is an office procedure. Also, I would like to know more details about the surgery that was done. If you have the papers, then you may please scan the same to me in a query as this will let us diagnose your current condition. For allergies, we also suggest nasal spray, like Metaspray (Mometasone) or Flomist (Fluticasone). Consult your specialist doctor, discuss with him or her and take the treatment with consent. These sprays are taken in the morning and in the evening, two puffs in each nostril for about two weeks and thereafter the dose is reduced and stopped after a month or two. I advice you to take the following blood test as well, serum total IgE. This will give an indication about the allergy status and we can investigate further to know which allergens cause allergy in you.