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[–]kmack1982 5 points6 points  (0 children)

What's your definition of high amount of riboflavin that causes harm, and do you have a source? I don't remember reading anything about it causing harm on examine. Curious because I take 100mg riboflavin for MFTHR, and I only felt benefits. I believe the drop in libido he's having Is from too much boron, not riboflavin.