I get frequent cold, runny nose and sneezing. Usually starts in the morning and lasts till noon. If I take a cetrizine it gets controlled in an hour or two. At local clinic doctor prescribed a stronger dose of levocetirizine for a week, after this medication cold got controlled for a week and then it re started to appear in regular frequency. This is happening since almost an year. I tried strict diet control, nose mask, home remedies, taking steam bath, but they dint help in long term. Please suggest.