Hello. Thanks for asking to HCM. The environment conditions are quite different in Canada & India. If your doctor has confirmed that you are not having any severe disease then I would think your symptoms due to environment change. Yes, you can take Telekast-L. It works in allergic respiratory conditions. As you have asked for home remedies, I would suggest you to take 1. warm milk with turmeric 2. ginger juice with honey. However, home remedies are best suggested after knowing your constitution in detail. Also, you can have daily steam inhalation, breathing exercises, pranayama, which will help a lot on a longer run. I would also suggest you to try to avoid frequent temperature changes (while going in/out from room), cover your nose to protect it from cold air currents, set your room temperature and humidity to avoid cold & dry air. I hope this helps you. Wish you faster recovery and adaptation. Regards. Dr Parin