Hello doctor, I was taking Levova-M(Montekulast with Levoce

Patient: Hello doctor,I was taking Levova-M(Montekulast with Levocetrizine) tablet last month. A doctor prescribed it when i visited him with a common cold ! When i stopped it suddenly (i.e.,i when forgot to take it for a few days) it leads to a severe sneezing which i have never experienced before. It will disappear as i re start medication or patiently wait for 3 or 4 days. What is the reason for this sneezing ?

Symptoms: Unprecedentent Sneezing when medication stops

Doctor: