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Office of Dietary Supplements - Vitamin B12. Nih.gov, 27 Feb
Resources if you are new to using tryptophan/5-HTP, GABA and DPA as supplements If you are new to using the amino acids as supplements, here is the Amino Acids Mood Questionnaire from The Antianxiety Food Solution (you can see the low serotonin, low GABA and low endorphin symptoms) and a brief overview here: Anxiety and targeted individual amino acid supplements: a summary
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B12 helps convert food into energy, enhancing metabolism
Gibson BA et al
B-1 helps to maintain the normal function of the nervous system, muscles & heart
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