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"Optic neuropathy as a presenting feature of vitamin B-12 deficiency: A systematic review of literature and a case report"

Sublingual B12: Pros and Cons Sublingual B12 supplements dissolve under the tongue, where some of the vitamin may be absorbed through the tissues in the mouth before being swallowed

While B12 injections are primarily used to treat vitamin B12 deficiency , some people with low levels may notice improvements in energy once their deficiency is addressed

One of MOTS-C's downstream effects is increasing intracellular NAD+ utilization the mitochondria are running harder, so they're consuming more of the NAD+ pool