Why is my baby puking up his formula?

Tiffany - posted on 12/04/2012 ( 1 mom has responded )




We recently switched our 4 week old son's formula from Similac Advance to Similac with lower iron because he was having a hard time pooping. Now he seems to projectile vomit with this new formula. We switched him 24 hours ago. Anyone have any suggestions as to why this is happening? We go see the doctor in 2 days but I don't really know what to do in the meantime.


Holly - posted on 12/04/2012




children can not easily switch from one formula to another, if you could try to mix them. start slowly, it should help. try 1/4 the new and 3/4 the old for a day or two then 1/2 and 1/2 the next day or two then 3/4 new and 1/4 old for a day or two, then you can switch to the new formula exclusively

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