83830, you are so right! That is something that is not acknowledged around here nearly enough. And, this is true not only with supps, but also with diet - for instance some folks can handle fruit on the candida diet and other cannot. Some can do commercial yogurts and others cannot, and so on. So, I think personally when one says you "must" do this or eat that or not eat that, it should be followed by the caveat that all persons are different and your results may vary (except of course about Sugar and what flour, which are basically universal candida no-nos.
I feel bad because I have been promoting the kraut because it has been such a good thing for me, and I figured since I am "miss sensitive" it would be ok for everyone. That was stupid of me. I am sorry the kraut messed you up. :( I am unfamiliar with IBS-C, so not even sure if it would have occured to me to warn you even if I had known.
I hope you feel better soon! I hate when stuff I try messes me up like that. I just had my own experience with something which I will post in a separate post.