Amy - I can't remember off the top of my head but if you check out Medsafe that'll give you a list of possible side effects but I do know that many of the side effects are similar to what you are treating anyway - antinausea meds that have nausea as a possible side effect etc.
Who knows if time has helped or if it's the ranitidine?
Language surge might be helped by more sleep too?
So often it's hard to untangle exactly what's helped where - guess you could go back to the ranitidine and see if he gets worse??! Joking really!

Glad you've found some kind of an improvement after all!