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Methylcobalamin can be the better choice for patients with the MTHFR gene variant, certain liver or kidney concerns, or anyone who has had cyanocobalamin shots and didn't feel a noticeable response
"Clinical" indicates human trials, "preclinical" indicates primarily animal research
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Cognitive function: NAD+ supports neuronal health through SIRT1-mediated neuroprotection and PARP-dependent DNA repair in neurons (Lautrup et al., 2019)
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