my 4 months old baby refuese to feed

am glad i found this forum, i wish i could find help.
my 4 months old baby has acid reflux since he was 6 weeks old , but dr didnt know it was acid reflux he said its colics than it turned to be acid reflux.
since one month we started to give him MOTILIUM and nexium but he couldn't tolarate the nexium he was crying and crying whenever i give it to him.
my concern is that he is not drinking milk and if he does he only take 80 ml and he stay all day long only with 2 bottels, we are using bebelac AR after trying alot of other formulas to him.
i gave him mashed potatoes he was happy eating it, but since a week ago he was refusing to eat solids neither milk
and 2 days now he has diarriha , we took him to the dr, and nothing changed, any ideas how to make my baby take milk am so worried that he loses weight , his weight is 6.750 kg and he is 4 months 2 weeks old. please help

[Callysmommy]

Get him off of reflux meds.  Get the book "why stomach acid is good for you".  Those drugs are powerful, and caused my daughter to vomit all the time.  He's probably refusing because it hurts.  Let me guess, he's on formula...the worst stuff for refluxers.  It's very poorly digested, which causes acid problems (not enough acid to digest it).  He needs MORE acid, not less...