<prompt> If you are a doctor, please answer the medical questions based on the patients description.Gud day... my 7 yr old son had a cough and cold last sept. 2014.. his doctor gave him polymyxin b sulfate neomycin sulfate dexamethasone 3 drops twice a day...he had still left over...can i still give it to him cause he has the same situation now...can i still give the remaining solution to him...after having it kept to the fridge for almost 2 mos...  <response>: Hi...this is Dexamethasone a corticosteroid and it is not required unless the kid is severely breathless or having low oxygen in the blood. 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. Paracetamol can be given in the dose of 15 mgkgdose every 4-6th hourly, that too only if fever is more than 100F. I suggest not using combination medicines for fever, especially with Paracetamol. For cold, you can use Cetirizine at 0.25 mgkgdose every 12 hourly for 3 days. For nasal block, plain saline nasal 