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According to the National Institutes of Health (NIH), no Tolerable Upper Intake Level (UL) has been established for B12, indicating that the risk of harm from high doses is low [*]

Adhere to the guidelines to avoid unwanted side effects

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Vitamin B12 can help combat brain fog, improve mental clarity, and support cognitive health, enhancing your focus and productivity

High NNMT expression is closely associated with glucose dysregulation: excessive NNMT activation disrupts nicotinamide metabolism, lowers NAD+ levels, impairs insulin signaling, reduces cellular glucose uptake and utilization, and promotes hyperglycemia and insulin resistance