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The research literature documents benefits ranging from enhanced working memory and accelerated learning to protection against age-related cognitive decline and recovery from neurological injury, with several compounds holding regulatory approval for cognitive indications in countries where peptide therapeutics receive more progressive treatment

[PubMed: 4623634] 300

However, even people with a standard level of B12 can benefit from B12 shots on a regular or one off basis, because there a wide range of health advantages associated with this one vitamin

Neuropsychopharmacology 35, 21012109
