Hi Alz, I am sorry to hear that your bub has reflux. I think that you were on the right track with the nan HA, it is more broken down and easier to digest for a reflux baby, this means it sits in the tummy longer and will cause less reflux and if it does get vomited up hopefully some will be digested before this happens.

With a spitter what you have to go on is weight gain, if he is gaining weight and having wet nappies he is fine. It always looks a lot more coming out as it is thickened with spit and gastric juices. Also refluxers tend to have an extra feed or two and that counteracts it generally.

Soy is not generally a good choice for a refluxer, in fact I don't think I know any that have done well on it, and it is because the proteins are quite large and hard to digest, you may find that he will be in pain longer or vomit more on it, it may also cause constipation, diarehha or eczema.

With the zantac if he is fussy and crying then it is a good idea to be on it, make sure to get the dose increased with his increasing weight as it is very weight sensitive.

Good luck with the Dr!