It's the bioactive form (no conversion required), retains longer in tissues, and a meta-analysis of randomized controlled trials found mecobalamin (methylcobalamin) effective for peripheral neuropathy
Its found in human plasma, saliva, and urine, and its levels decline with age
This would be called enforcement discretion, essentially the FDA looking the other way
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Consult your healthcare provider before use, especially if you have known allergies to any components, including Glutathione or Vitamin C
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