You mean like a tums ???

ACV is apple cider vinegar, which I have used to control my acid reflux for years.

However, right now I have had it controlled so great that it is no longer bothering me, haven't had to use anything or had any flare up for about 6 months, but I have also lost 30 pounds in last 6 months also. So, nope, not had any problems until I took the Rlipoic.

I also had the same problem when I tried to take natural calm which is a drink powder with ascorbic acid in it.

edit to say: it's more like a feeling of food coming up my throat than actual heartburn. more the acid reflux.