My son is 3 month old. We have been trying to supplement him with powder milk since his birth. First time when we tried at his 15th day, he did okay. I didn't try powder till he is 2 month old. At his 2 month age, I fed him 30 ml of powder milk, but he vomited continuously for 4-5 hours after taking powder milk. I am using lactate tablets for milk increase and didn't try powder till he is 2.5 month old. Recently I tried different milk powders (Lactogen, Similac Sensitive), also different quantities all the time he is vomiting for 1-2 hours at least after taking powder milk. Just couple of days back, I tried a teaspoon of powder milk, even after that also he vomited for 2 hours. When he will be able to digest well the powder milk, why he vomits powder milk? Can he be able to eat cerelac at 5 month age like any other baby?