MrsD, I'm sorry, I know this is a really old post, but I was wondering, do you still buy your Methylcobalamin B12 from Costco? If so, is it the sublingual kind? Does it contain sucralose? I saw the methylcobalalamin at Costco but they only had the sublingual kind with the artificial sweeteners in it.

I found that if I even eat ONE tiny breath mint containing sucralose I will get horrible violent long drawn-out stabbing pains in my feet, bad enough I had to leave work, so I was afraid to use these. I was wondering what your experience was with sucralose.