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Description
Vitamin B12 is a nutrient that helps keep our bodies healthy

It is in fact the most common amino acid in your muscles, making up 61% of your skeletal tissue.Glutamine easily passes through the blood-brain barrier and is converted inside your brain into glutamic acid and also increases levels of gamma-aminobutyric acid (GABA) - an amino acid that acts as a neurotransmitter in your body

1995 Jun;27(3):237-53

Vitamin B12 supports the health of blood and nerve cells, but some people's bodies are unable to absorb it