Thiamine Thiamine Thiamine

Below are links to studies showing that vitamins in the B Complex help relieve anxiety and depression.  

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References:

Dietary intake of B vitamins and their association with depression, anxiety, and stress symptoms: A cross-sectional, population-based survey

https://pubmed.ncbi.nlm.nih.gov/33848753/

The Role of Vitamins and Minerals in Psychiatry

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3046018/

Thiamine and benfotiamine: Focus on their therapeutic potential

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10682628/

Hiding in Plain Sight: Modern Thiamine Deficiency

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8533683/

Vitamin B6: A new approach to lowering anxiety, and depression?

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9577631/

High‐dose Vitamin B6 supplementation reduces anxiety and strengthens visual surround suppression

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9787829/

Higher vitamin B6 intake is associated with lower depression and anxiety risk in women but not in men: A large cross-sectional study

https://pubmed.ncbi.nlm.nih.gov/31188081/

Dietary riboflavin intake in relation to psychological disorders in Iranian adults: an observational study

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10060244/

Dietary niacin intake in relation to depression among adults: a population-based study

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10506255/

A Systematic Review and Meta-Analysis of B Vitamin Supplementation on Depressive Symptoms, Anxiety, and Stress: Effects on Healthy and ‘At-Risk’ Individuals

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6770181/

Biology of Perseverative Negative Thinking: The Role of Timing and Folate Intake

https://pubmed.ncbi.nlm.nih.gov/34959947/

Vitamin B12 Supplementation: Preventing Onset and Improving Prognosis of Depression

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7688056/

The Effects of Magnesium Supplementation on Subjective Anxiety and Stress—A Systematic Review

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5452159/

Effect of magnesium and vitamin B6 supplementation on mental health and quality of life in stressed healthy adults: Post‐hoc analysis of a randomised controlled trial

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9292249/

The Role of Vitamins and Minerals in Psychiatry

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3046018/

Additionally...

Factors associated with villus atrophy in symptomatic coeliac disease patients on a gluten-free diet

https://pubmed.ncbi.nlm.nih.gov/28220520/

Influence of Tryptophan and Serotonin on Mood and Cognition with a Possible Role of the Gut-Brain Axis

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4728667/

The Effects of Dietary Tryptophan on Affective Disorders

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4393508/

Antidepressant-like Effects of Representative Types of Food and Their Possible Mechanisms

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10574116/

Tryptophan-enriched diet or 5-hydroxytryptophan supplementation given in a randomized controlled trial impacts social cognition on a neural and behavioral level

https://pubmed.ncbi.nlm.nih.gov/34737364/

Effect of Tryptophan, Vitamin B6, and Nicotinamide-Containing Supplement Loading between Meals on Mood and Autonomic Nervous System Activity in Young Adults with Subclinical Depression: A Randomized, Double-Blind, and Placebo-Controlled Study

https://pubmed.ncbi.nlm.nih.gov/31902864/

Nutritional and herbal supplements for anxiety and anxiety-related disorders: systematic review

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2959081/

Nutrition as Metabolic Treatment for Anxiety

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7907178/

Sharing Pathological Mechanisms of Insomnia and Osteoporosis, and a New Perspective on Safe Drug Choice

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6336562/

Passiflora incarnata in Neuropsychiatric Disorders—A Systematic Review

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7766837/

Effects of L-tryptophan on sleepiness and on sleep

https://pubmed.ncbi.nlm.nih.gov/6764927/

The impact of tryptophan supplementation on sleep quality: a systematic review, meta-analysis, and meta-regression

https://pubmed.ncbi.nlm.nih.gov/33942088/

Is tryptophan a natural hypnotic?

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC161739/

The Role of Tryptophan Metabolites in Musculoskeletal Stem Cell Aging

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7555967/