My doctor in India prescribs it for 2 weeks (10mg/1 per day) & told me not to continue for more than 1-2 months? I see in this or various other user groups where people have been taking Singulair (montelukast) for many years continuously. I would like to continue Singulair (montelukast) more than a month or two as it helps my allergy/asthma.