Dadgumm--! I was using Alka Seltzer Gold to reduce herxing, and, though I briefly thought about
it, didn't fully realize how bad the Mannitol (sweetener) could be for GI upset, and apparently it can even aggravate or worsen C. Diff. I am so mad at myself that I didn't carefully look at the label and/or didn't associate Mannitol with pretty bad GI symptoms. Fermentation is one of the worst things you can do to an irritated colon, and Mannitol does that to an extreme.
I was so happy that I had found the Alka Seltzer Gold at the CVS, and didn't have to order it. I think it's actually making me really sick.
Mostly venting, but also warning others.