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Hydroxocobalamin tends to remain in the body longer and is more readily converted to the active coenzyme forms of B, which can make it effective for maintaining B levels

The biggest variable is dietary behavior

Article: Why You Can't Take NAD+ Directlyand the Best Precursor to Boost NAD+ Effectively Why You Can't Take NAD+ Directlyand the Best Precursor to Boost NAD+ Effectively Key Takeaways The NAD+ molecule as a supplement is largely ineffective because NAD+ cannot enter cells intact and is unstable in supplement form

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