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Vitamin B12 is not made by the body and is provided either by diet or supplementation
B3 that is not methylated can be instead transformed into another molecule called nicotinamide adenine dinucleotide (NAD+), which is essential for producing energy, repairing DNA, and other benefits
Not intended for human or veterinary use
Some people feel improvement in fatigue sooner, but blood markers and neurologic symptoms may take longer to assess
When administering a higher dose, the benefits should be weighed against the risks
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