Hi Thanks for your query. Your child is having acute gastroenteritis which is mostly viral in nature and settles in few days. Most important is to maintain hydration. since vomiting has stopped there is no need of giving emset or ranitidine inj. For fever you can give acetaminophen in prescribed dosage. Continue with vizylac. Give oral rehydration solution if stool is watery. Give lemonade,curd,rice porridge,banana In case symptoms persist get him re evaluated by pediatrician as sometimes bacterial infection is there for which a course of antibiotic will be needed. Wishing your child good health. God bless..