Hello Dr. My son Aaditya he is 2 years old. Within 15 days gaps he got affected with throat infection because of viral infection, dust etc. 1st day he start with running nose. 2nd dry cough and throat infection Then continously Dry cough and cold so that he can t eat anything and cant even sleep at night. When I ask Dr. He ask m some medicine for throat infection And duolin respules twice a day. When my son took duolin his dry cough and cold reduce. And he get relife from that continues irritation. My question to you that my son face same problem frequently is it right to ues duolin frequently for him?