Your son is suffering from Respiratory tract
infection and hence he is having all the symptoms you've mentioned.
I'm worried that his illness has been going on for so long (2-3 weeks).
I would advise:
1. Syr Ondem (for vomiting
) 2.5 ml maximum 3 times a day
2. Syr Calpol (for fever/pain) as per the instructions on the bottle
3. Nasal Salin drops, 2 drops in each nostril, 3-4 times /day
4. Ct Augmentin
5. Make sure he takes oral liquids he likes and has 5-6 wet nappies a day
6. Please get him checked over by Pediatrician
, since he is not all eating or drinking, he is at risk of getting dehydration
I hope he recovers soon
Dr Tejas Shah
Pediatric Critical Care Specialist