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Some patients see results within weeks
doi: 10.1038/S41431-018-0123-5 80 ChenYGCieckoAEKhajaSGrzybowskiMGeurtsAMLiebermanSM
Despite our efforts to include all relevant studies, it is possible that some important studies were overlooked or excluded due to our search criteria or other limitations
I have not experienced any nausea, or any negative side effects as described
Untreated vitamin B12 deficiency can lead to anemia or irreversible nerve damage
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