My 4 year old autistic grandson has a constant cough. His father has advised me that it is allergies and to give him 4ml of Childrens Benadryl. He has a dry cough with a clear runny nose. At times his cough is so bad that he acts like he may vomit. I took him to our small town and talked to the pharmicist and he also said 5ml of Mucinex Children which I have given both to him every 4 hours for the last 9 hours. Still no relief and sobbing because his throat most be raw from coughing so much.
Hi... Thank you for consulting in Chat Doctor. Cough and cold are viral 95% of the times in child Chat Doctor.  For cold, you can use anti-allergics like cetirizine and for nose block, saline nasal decongestants will do. For cold and cough you can use Cetirizine at 0.25 mg/kg/dose every 12 hourly for 3 days. If cough is very severe you can give Promethazine syrup at 3.5ml twice a day dose for 3 days and see. For nasal block, plain saline nasal 