Evidence supporting the use of: Thiamin (vitamin B1)
For the health condition: Fatigue

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Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Thiamin (vitamin B1) has a scientifically established role in energy metabolism, as it is an essential coenzyme in carbohydrate metabolism and plays a crucial part in mitochondrial energy production. Thiamin deficiency leads to conditions such as beriberi and Wernicke-Korsakoff syndrome, both of which are characterized by symptoms that include profound fatigue, muscle weakness, and neurological disturbances. Supplementation with thiamin in deficient individuals has been shown to reverse these symptoms, providing clear scientific support for its use in treating fatigue specifically resulting from deficiency.

However, the evidence for using thiamin supplementation to treat fatigue in the general population—where deficiency is not present—is significantly weaker. Few high-quality clinical trials demonstrate benefits for fatigue in otherwise healthy or non-deficient individuals. Most studies focus on populations at risk of deficiency (such as those with malnutrition, chronic alcoholism, or certain chronic illnesses). In these groups, correcting thiamin deficiency can improve fatigue, but this does not translate to a general recommendation for thiamin supplementation to treat nonspecific fatigue in healthy populations.

In summary, the use of thiamin to support fatigue is scientifically justified, but primarily in cases of deficiency. Evidence does not support its routine use for fatigue in those with adequate thiamin status. The overall evidence rating is therefore modest, reflecting clear benefit in deficiency but limited data for broader applications.

More about Thiamin (vitamin B1)
More about Fatigue

Other ingredients used for Fatigue

1,3,7-Trimethylpurine-2,6-dione
5-methyltetrahydrofolate glucosamine
Acai berry
Acetyl L-carnitine
Acetyl-L-Tyrosine
Achyranthes
Adenophora
adenosine 5-triphosphate disodium (ATP)
Adenosine triphosphate (ATP)
adrenal cortex
Adzuki bean
Agarwood
Agrimonia pilosa
AHCC
Akebia
Albizia
Aletris
Alfalfa
Algae
Algal protein
Allium tuberosum
Almond fruit
Alpha D-ribofuranose
Alpha lactalbumin
Alpha polylactate
alpha-ketoglutarate (AKG)
alpha-lipoic acid
amaranth
amber
American Liverleaf
amino acids
Amor seco
anamu
anemarrhena asphodeloides
Angelica
animal protein
anthocyanins
antler
Antrodia camphorata
apple
apple cider vinegar
Aralia
Ardisia
Areca
Arginine aspartate
arginine creatine
Arginine malate
Arginine orotate
Arisaema
arjun tree
arjuna
arjunic acid
Armillaria mellea
ashitaba
ashwagandha
asparagus
aspartic acid
astaxanthin
aster root
astragaloside
astragalus
atractylodes
atractylone
Autumn Olive
avens
ba ji tian
baccosides
bacoside
bacteria
baicalin
banana
baobab
barley
Basidiomycota
Bassia scoparia
Bauhinia
BCAA
bee pollen
beef
Beef liver
beet
bergamot
beta-alanine
beta-hydroxybutyrate
betel
betony
Bifidobacterium breve
big quaking grass
bignay
biota seed
bird\'s nest
black cumin
black garlic
black ginger
black gram
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black seed
black tea
Blepharis
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Boerhavia diffusa
bone marrow
bonito peptide
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borassus palm
borneol
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bovine heart
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bovine spleen
brahmi
branched-chain amino acids
breadnut
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bupleurum falcatum
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chard
chen pi
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Dolichos
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dragonhead
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dulse
dulse leaf
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elk antler
Embelia
emblicanin
enokitake
Ephedra
ephedrine
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eriocitrin
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Ethyl-Alpha-Guanido-Methyl-Ethanoate
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fatty acids
fennel
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fish protein
Flammulina velutipes
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flavin mononucleotide
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Foxtail millet
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fu ling
fulvic acid
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Herb Robert
hericium mushroom
hibiscus
hijiki
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horny goat weed
horse gram
Horsemint
hydroxymethylbutyrate
Hygrophila
hypsizygus marmoreus
icariin
Ilex
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iridoid glycosides
iridoids
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Jaboticaba
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knotweed
Kokam
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lion's mane
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little ironweed
longan
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lotus seed
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NADH
Nardostachys
Natsudaidai
Nettle
nicotinamide riboside
noni
nopal
nut grass
oat
okra
omega-3 fatty acids
Onosma bracteatum
oolong tea
Ophiopogon
ophiopogon root
orange
orchid
Orchis latifolia
Ornithine
ornithine alpha-ketoglutarate
ornithine L-aspartic acid
Oroxylum indicum
oryza
Osmanthus
oxaloacetic acid
Oxindole alkaloids
Oxypregnane glycoside
oyster mushroom
paeoniflorin
Palatinose
pantothenic acid (vitamin B5)
paraxanthine
parsley
Passionfruit
Pentacyclic triterpenoids
Pentatropis capensis
peony
Pepper
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Peptides
Persimmon
Phaeophyceae
phellodendron amurense
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Plankton
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plum fruit
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polygala root
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polyporous mushroom
polysaccharides
pomegranate
Portulaca
potassium
prebiotic blend (proprietary)
Prickly Pear Cactus
Propionyl-L-Carnitine
protein
prune
Pseudostellaria
Puerain
punarnava
purslane
Pycnogenol
pyrroloquinoline disodium salt
pyrroloquinoline quinone
pyruvate
quail egg
quercetin
quinoa
Quinoa Protein
Rehmannia
rehmannia glutinosa
reishi mushroom
relora® (proprietary)
Rhaponticum
Rhodiola
Rhodymenia
riboflavin (vitamin B2)
ribose
rice
robusta coffee
rockweed
Rooibos
root tuber
Rosa roxburghii
Rosabin
rosavins
rosemary
royal jelly
Rubia cordifolia
Rubia yunnanensis
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Sarivan
sarsaparilla
Scabrous Gentian
Schisandrins
Schizandrol A
scrophularia root
sea salt
seaweed
Selaginella
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sesame
Sete sangrias
Shark Liver Oil
Shataverins
shiitake mushroom
Shilajit
Sichuan Lovage
Sida cordifolia
silk tree
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smilax
Sophora
soursop
Spanish Needle
Spantholobus
Spelt
Spikenard
spinach
spirulina
spruce
Sulbutiamine
suma
Sumac
Sweet Bay
Sweet Orange alcohol
Sword Bean
Tamarind
Tea
Teacrine
Tejocote
Terminalia
Theacrine
Thiamin (vitamin B1)
thyroid substance
Tiger Nut
Tinospora cordifolia
Tongkat ali
trace minerals
Trametes
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Trichopus zeylanicus
Trimethylglycine (TMG)
Triphala
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turmeric
Turtle Head
ubiquinol
Uncaria
Urolithin A
vegetable and fruit blend (proprietary)
vegetable blend (proprietary)
Vegetable Protein
velvet bean
Vetiver
Vine tea
vitamin B
vitamin B12
vitamin B6
vitamin C
vitamin D
Water Pepper
Watercress
Waterhyssop
Watermelon
Wax Gourd
Wheat
wheat germ
wheat grass
Whey protein
White Tea
whole adrenal glandular
Winter Begonia
Withanolides
Wood betony
Wulinshen
Xanthine
Xanthone
Xanthophyll
Xylaria nigripes
Yeast
Yerba buena
Yerba mate
Yohimbine
Yuzu
Zapilopatle Bean
Zedoary
Zucchini
β-nicotinamide mononucleotide (NMN)

Products containing Thiamin (vitamin B1)

Integrative Therapeutics Active B-Complex
Vitabase Active Man's Formula
Vitabase Active Woman's Multi
Designs For Health Adrenal Complex
Designs For Health Adrenal Complex
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Pure Encapsulations B-Complex Plus
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Designs For Health CatecholaCalm™
Metagenics Ceralin® Forte
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Metagenics Clear Change 10-Day Detox Program with UltraClear Plus Vanilla
Metagenics Clear Change 10-Day Detox Program with UltraClear RENEW Berry
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Metagenics Clear Change 28-Day Detox Program with UltraClear Plus Berry
Metagenics Clear Change 28-Day Detox Program with UltraClear Plus pH Pineapple Banana
Metagenics Clear Change 28-Day Detox Program with UltraClear Plus pH Vanilla
Metagenics Clear Change 28-Day Detox Program with UltraClear Plus Pineapple Banana
Metagenics Clear Change 28-Day Detox Program with UltraClear Plus Vanilla
Metagenics Clear Change 28-Day Detox Program with UltraClear RENEW Berry
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Metagenics Multigenics®
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