Yet another feeding post so I can start a poll.

Cliffsnotes: Something is wrong with LO's eating and no one at my ped office seems to be taking me seriously. She's on zantac but I'm not convinced it is doing anything. I asked a nurse on the triage line at my ped office today if I could/should try a dairy free formula and she said she wouldn't recommend doing that without making (yet another) appointment with the doctor (who I sort of have no trust in at this point).

Is there any DOWN SIDE to trying a MSPI formula? Is it harmful in any way at all? If it isn't harmful-- what could it hurt to try it with her and see what it helps?

And if I do try it... which one should I try first?