Not sure about regular vitamin C. I only have sustained release. I'm off all supplements for a while so I can't test this quite yet.

I think you might be on to something there. It does seem to odd for the body to regulate pH so perfectly then throw something like sustained release vit C in the mix.

I believe for food to leave your stomach your pH has to hit the exact acidity threshold and the lower sphincter opens. It does sound like a bad idea to be changing the pH of that food as it moves through a system that is probably designed for a set pH at that point.

Does this mean those big calcium/magnesium pills are also suspect? I can't believe they're totally digested in the stomach and don't just continue affecting pH as they travel down your small intestine.

Well, I am quitting all my supplements for a week or two at my doctor's request. Maybe things will actually improve. I'll report back.

I increased vit c intake from 500 to 2 or 3k mg per day. I changed to buffered c (calcium) with flavonoids to help ward off any stomach problems.

I'm copper deficient according to ceruloplasmin, serum copper, 24 hour urine copper test, and spectracell vitamin analysis. I tried eliminating all copper before that for a week when I was still unsure and I felt horrrrrible.

How does one find this out? I just recently started niacin and powered Vit C with my other supplements, and started to get heart palpitations and was doing some searching when I ran on to this site. I already have Depression and anxiety and had read Vit C was good for this. Thought it was to calm not excite. How to find out about the copper toxicity ?