Doc can I change the formula from Nanpro to lactogen? I feel my baby is not looking chubby or gaining enough weight wil it help?

A. I would have advised to do the same if you would have asked to switch on to a better version from a lower version you are you are doing just opposite you want to go from a better version to lower version of the child is not gaining weight with the mail that you are giving go for a better one Similac advance because lactogen is not that good to be given to the child