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Deficiency can cause fatigue, brain fog, and mood changes

This affects all SAM-dependent reactions, for example the nerves through reduced production of myelin and acetylcholine but also neurotransmitter synthesis and degradation in the biopterin cycle, as we discussed above

In cases where the mucosal lining of the intestines does not allow for the production of a type of protein called intrinsic factor, B12 supplementation is required

One common suggestion that often pops up in conversations about combating tiredness is the vitamin B12 shot

0.9% benzyl alcohol standard

Neurology of Nutritional Vitamin B12 Deficiency in Infants: Case Series From India and Literature Review. J Child Neurol