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Niacinamide by inhibiting tryptophan pyrrolase (an enzyme) and can increase the amount of tryptophan available to be converted to serotonin and therefore improve mood
201,202 The circadian rhythm exerts an influence on the immune function 203 and metabolic activities 204 of the body, playing a pivotal role in upholding normal physiological functions
Mitwalli 1988
Peng H, He Q, Zhu J, Peng C
In this study, these results suggest that B6 is more effective at reducing anxiety than B12
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