Can you use milk as an antacid?

Yes, unfermented soy (soy milk is one form) is bad for your health. Almost 60% of processed foods have soy in some form in their ingredient list. Fermenting soy helps to neutralize some of the natural toxins and enzyme inhibitors. The Trypsin inhibitors in soy milk are prohibiting your from properly digesting your food ( thus causing reflux.) That is OK for a very short time but soon you will become nutrient starved and reflux will be the least of your problems.