MSM may be naturally present in foods but ALA is naturally present and produced right in our bodies, and found in foods, and many people have terrible reactions to that.

I really think Andy was right when he said there are two types of people. Some need more sulfur to get better some need less, and I don't think there are any magic bullets to getting better when dealing with mercury. I'm pretty sure it deals with how fast one is able to excrete mercury, and you can't stir up any more mercury past that limit without feeling really terrible.

My personal experience is that I can handle high sulfur, always could, but can't handle supplements that could possible be methyl donors (methylcobalamin, betaine, the coenzyme of folic acid, etc..).

I'm really glad to hear that MSM is helping you, but its not safe to assume that it would help everybody.