Bests & Worsts Reviews from Amazon

according to people

411
people found this helpful, as of 2023
ranked #50,627 most helpful out of 571,544,897 reviews
★☆☆☆☆
cancer risk?
I stopped taking NIAGEN because studies on mice have found that higher levels of NAD+ fuels cancer growth. I would be careful about taking NAD+ precursors like NIAGEN until more is known.
June 2019 · Health and Household · verified purchase
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