Brief Answer:
Formula milks are difficult to digest and may be the cause

Detailed Answer:
Thanks for using the Ask a Doctor service.

I have gone through your query and understand your concerns. Let me first ask whether the baby is exclusively breast fed or whether formula feeds are being given. Formula feeds may be difficult to digest and may make the child vomit. In such a case switching back to breast milk should provide relief.

Let me emphasize on the fact that breast milk is the best possible milk for a baby and there can be no alternatives for the same. Most formula milks are cow milk based and hence difficult to digest. Moreover they make the child more prone to complications and infections. Mother's breast milk is produced on the demand of the baby. Hungrier the baby, more vigorous is the suck. More is the suck, more is the amount of breast milk produced. Giving formula automatically reduces the demand of the baby and thereby the production of breast milk. All you need to do is to switch back to exclusive breast feeding and the production will increase automatically. All you need to do is to monitor the urine output. If the frequency is more than 6 times in 24 hours, you would know that the amount of feeding is adequate. If the amount of passage of urine is less or if the child is lethargic you would need to take the child to a doctor without delay.

Also note that you should burp the baby for at least 15-20 mins after each feed. All you need to do is to hold the baby head end elevated for this duration. Otherwise the milk may regurgitate back from the stomach to the food pipe, thus causing vomiting. You can otherwise give Coliaid Drops when needed, if you feel that the child is uncomfortable.

As such, it safe to give Emeset Syrup (2mg/5m) 1ml when needed. However, you need to take care of the primary issue first.

Regards

---