Well, it depends. Not all of us has this problem.
How long have you been on the cyano? Do you feel a difference at all energy wise?
I've read that when B-12 is actually absorbed in the body that it will dump the rest that it doesn't need out through the urine. I get this all the time with the Methyl but never with the cyano. I also never felt a difference in energy while I was on the cyano. It does work for some people though and it is the cheapest. Methyl can be pretty pricey.
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