thank you for your query,
taxim contains cefixime
which is a cephalosporin
generally no antidote is given for overdose.
1.stop using the drug immediately
2.keep your daughter hydrated
3.look out for any signs of seizures,vomiting
4.continue the vitamins
your baby will have discomfort till the drug is completely out of her system,this may take a while.till then she needs to be monitored.dont worry the symptoms will subside soon.
wishing you good health