Thanks for posting your query.
Your child is having viral gastroenteritis
, which causes sever vomiting.
you should check his dehydration
and give her lots of fluids (OHS).
Juices of ginger,apple and carrot are good.
Do not give any thing to eat just after vomiting, wait for an hour then give soft diet.
You can give Gravol but it is usually given in motion sickness
and should be avoided in asthmatic and allergic patients. You may also use promethazine
1 mg/kg/dose 4 to 6 times in a day as needed.
If symptoms persist then visit paediatrician for further management.
Hope it helps.