Chiropractic is a great idea for reflux, I know of more than one baby for whom it was a great help.

The only natural alternative to ranitidine (Zantac) I know of is Slippery elm powder, but it is no better tasting and very difficult to prepare.

The best way to give bad-tasting medicine to a little one that age is to dribble it down the inside of his cheek slowly, and run his throat and face to encourage him to swallow.

Good luck!