Hello. Thanks for posting your query at our health forum. It seems your son has developed an upper respiratory tract infection ( mostly viral ) and hence has developed cough, cold and runny nose. It is better to wait for 2 days because antibiotic usage due to chances of developing resistance, is not prescribed right away. You can continue giving him Paracetamol syrup for his fever twice daily after food, and benadryl cough syrup, 10 ml twice daily. The benadryl syrup is only to be used when his coughing is continuous. It will make him slightly drowsy, so it is better he stays home during the treatment. You can try giving him some steam inhalation. It will help him recover from his cold soon. If there is a lot of congestion, then Oxymetazoline ( Nasivion ) Nasal drop can be used, 2-3 drops per nostril, to relieve the congestion. But also take precautions to not to use it regularly and only when he has severe congestion. If he s not recovering in a day or two, and also if his fever is high grade, it is better to start him on antibiotics. I will recommend Syp. Amoxycillin 10 ml once daily ( not more than 250 mg for his age, normally it is 125 mg/5 ml ) for 5-7 days depending upon his severity. But persistent high grade fever will warrant a blood test to rule out malaria/typhoid e.t.c, which can be planned by your local GP. However, don t be alarmed unnecessarily. I feel its VIRAL URTI and it will be relieved on proper usage of medication. If you have vitamin c tablets, you can give him one per day. It is helpful in cold. Hope this is helpful. Feel free to discuss further. Regards