<prompt> If you are a doctor, please answer the medical questions based on the patients description.i am suffering from sneezing, itching and running nose.Before one year i got asthma problem.Now i am in Mexico.My doctor in India advised me to take L-montus and Unicontin-400mg.i didnt get this medicine in mexico.What is the equivalent madicine for this?pl give advise to me.  <response>: Hello. Thank you for asking at Chat Doctor. I went through your history and your query. I can understand your concern. I would like to make following suggestions to you:1. If you have sneezing, itching and running nose, you can ask for any over-the-counter antihistamine Chat Doctor. They can be cetirizine, levocetirizine, fexofenadine, loratadine, or others. You can take montelukast in addition to the antihistamine 