I don't know all the specifics, sorry. But I do know that most "stomach" problems are solved by detoxifying the liver, whereas prescription meds for the "stomach problems" do not solve anything.
That includes both ulcers and acid reflux / heartburn. The ignorance of people in the medical profession never ceases to amaze me. OTOH, the immorality of the people in the pharmaceutical industry's top management never ceases to amaze me either.
WATERLOGGED, did you try the vinegar or just dropped the SD?
Oh, and the Apple Cider Vinegar contains malic acid, which no other vinegar contains. So there *IS* a difference. Plus, it contains so many other substances, it's impossible to tell for sure which one is the active... There are probably a few...