Relationship: Fatigue and vitamin C

Evidence supporting the use of: Vitamin C
For the health condition: Fatigue

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Synopsis
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Synopsis

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

Vitamin C (ascorbic acid) is sometimes used to support or treat fatigue, but the scientific evidence supporting this use is limited. While vitamin C is essential for many bodily functions, including immune support and the synthesis of neurotransmitters such as norepinephrine, its direct impact on fatigue is not robustly established in the general population. Some small studies and clinical observations have suggested that vitamin C supplementation may reduce feelings of fatigue, particularly in individuals who are vitamin C deficient or under significant physical stress (such as athletes or hospitalized patients). For example, a few studies have shown that high-dose intravenous vitamin C can reduce fatigue in cancer patients or those with certain chronic illnesses. However, these effects do not necessarily translate to the general healthy population.

Most clinical trials have found that vitamin C supplementation in individuals with adequate baseline levels does not significantly reduce fatigue or improve energy levels. The rationale for its use is partially based on the role of vitamin C in adrenal gland function and the synthesis of carnitine, a molecule involved in energy production. However, for most people, a balanced diet provides sufficient vitamin C, and deficiency is rare in developed countries.

In summary, while there is some scientific rationale and limited clinical evidence supporting vitamin C for fatigue in specific populations (such as those with deficiency or chronic illness), overall evidence is weak. Thus, its routine use for fatigue in healthy individuals is not strongly supported by scientific research.

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Other ingredients used for Fatigue

acai berry
acetyl l-carnitine
adenosine 5-triphosphate disodium (ATP)
adrenal cortex
alfalfa
alpha d-ribofuranose
alpha-ketoglutarate (AKG)
amino acids
anthocyanins
apple
arjun tree
ashwagandha
asparagus
aspartic acid
astaxanthin
astragalus
waterhyssop
barley
beet
bergamot
berry flavor
beta-alanine
betel
bifidobacterium breve
black cumin
black garlic
sesame
black tea
bonito peptide
Indian frankincense
bovine heart
bovine kidney
bovine liver
bovine spleen
branched-chain amino acids
rice
bupleurum falcatum
burdock
caffeine
cat's claw
caterpillar mushroom
chaga mushroom
chen pi
chia seed
Chinese salvia root
chlorella
chokeberry
citrus sinensis (proprietary)
coenzyme Q10 (CoQ10)
coffee fruit
cordyceps
creatine monohydrate
turmeric
damiana
DHEA (dehydroepiandrosterone)
eleuthero
fennel
fenugreek
fish protein
folate
fruit and vegetable blend (proprietary)
fu ling
ginseng
gooseberry
gotu kola
greek mountain tea
green tea
guarana
guayusa
hibiscus
Indian tinospora
iron
knotweed
jujube
kudzu
l-5-methyltetrahydrofolate glucosamine salt (5-MTHF)
l-alanyl-l-glutamine
l-carnitine
l-cysteine
l-glycine
l-leucine
l-ornithine
l-taurine
l-tyrosine
l-valine
lactiplantibacillus plantarum
lactoferrin
lentinula edodes mycelia
lion's mane
liquid liver fractions
lychee
maca
magnesium
maitake mushroom
malic acid
maltodextrin
mango
mangosteen
marine lipid
matcha
melatonin
milk
moringa
muira puama
Acetyl-L-Tyrosine
nettle
nicotinamide riboside
spruce
oat
okra
omega-3 fatty acids
ophiopogon root
orange
ornithine alpha-ketoglutarate
oyster mushroom
pantothenic acid (vitamin B5)
parsley
peppermint oil
phellodendron amurense
plum fruit
pollen
polygala root
pomegranate
potassium
prebiotic blend (proprietary)
protein
prune
pyrroloquinoline disodium salt
quail egg
quercetin
quinoa
redcurrant
rehmannia glutinosa
reishi mushroom
relora® (proprietary)
rhodiola
riboflavin (vitamin B2)
rosemary
sardines
scrophularia root
shiitake mushroom
black ginger
spinach
spirulina
thiamin (vitamin B1)
tongkat ali
trimethylglycine (TMG)
triphala
almond fruit
turkey tail mushroom
ubiquinol
Urolithin A
vegetable and fruit blend (proprietary)
vegetable blend (proprietary)
velvet bean
vitamin B
vitamin B12
vitamin B6
vitamin C
vitamin D
seaweed
watercress
watermelon
wheat grass
whey protein
mulberry
whole adrenal glandular
yeast
β-nicotinamide mononucleotide (NMN)
sarsaparilla
suma
jiaogulan
oryza
tangerine
gastrodia
cardamom
atractylodes
nut grass
punarnava
smilax
tinospora cordifolia
rubia cordifolia
bee pollen
peony
lingzhi
morus
root tuber
silk tree
haliotis
amber
cistanche
dioscorea
dodder
ganoderma
lotus seed
morinda
electrolytes blend (proprietary)
dulse leaf
royal jelly
trace minerals
anemarrhena asphodeloides
purslane
fulvic acid
aster root
yerba mate
wheat germ
noni
wood betony
biota seed
nopal
goji berry
amaranth
millet seed
algae
cocoa
thyroid substance
ashitaba
soursop
sea salt
DMPX
1,3,7-Trimethylpurine-2,6-dione
5-methyltetrahydrofolate glucosamine
Aralia
Avens
Arjuna
akebia
Apple Cider Vinegar
Alpha polylactate
Antler
Arginine Creatine
Ardisia
Angelica
Antrodia camphorata
Arginine malate
Arginine aspartate
Achyranthes
Anamu
Autumn Olive
Albizia
Arginine orotate
AHCC
Aletris
Adrafinil
Agarwood
American Liverleaf
Alpha-Lipoic Acid
Astragaloside
Armillaria mellea
Alpha lactalbumin
Areca
Adzuki bean
Agrimonia pilosa
adenosine triphosphate (ATP)
Algal protein
Arjunic Acid
Adenophora
Allium tuberosum
Amor seco
Arisaema
Atractylone
Animal protein
Betony
Black Seed
Broussonetia
Beta-hydroxybutyrate
Breadnut
Blepharis
Beef
Beef liver
Big Quaking Grass
Bone Marrow
Baccosides
Basidiomycota
Black Gram
Bauhinia
Brahmi
Ba Ji Tian
black salt
Borassus Palm
Borassus aethiopum
Bacteria
Blue-Green Alage
banana
Baobab
BCAA
Bupleurum
bacoside
Baicalin
Bassia scoparia
Bignay
Boerhavia diffusa
Bottle gourd
Borneol
Bird's nest
Chia seed
Cumin
Camellia sinensis
Coconut
Centella triterpenes
Chinese Silkvine
Curry leaf
Cowpea
California chia
Cinnamomum
Clary sage
Cocarboxylase
Chinese Mountain Ant
Cyanobacteria
Catalpol
Coriolus mushroom
Codonopsis
Cactus
Cynomorium
Cyathula
Chinese Fleeceflower
Chinese Pond Turtle
Cereal grass
Chlorophytum
Chuchuhuasi
Cyclanthera pedata
Curcumen
Cymbopogon Martini
Cyanotis Vaga
Centella asiatica
Coca
Coconut Water
Chocolate
Chard
Chinese Ligustrum berry
Creatine
Chicken
Corktree
Chanterelle
Catuaba
C-Phycocyanin
Chondracanthus chamissoi
Chestnut
Costus
Cereus
Carthamus
cola nut
Canscora
Currant
Chondrus
DHEA
Dendrobium
Deer Root
Dodeca-2E, 4E-Dienoic Acid Isobutylamide
Dragon Fruit
Durian
Deer Velvet
Dong Quai
Dibenzo-alpha pyrones
Dragonhead
Devil's Club
Dolichos
Date
Dulse
D-Ribose
Dextrose
Duckweed
Ephedra
Erythropalum scandens
Eriocitrin
Eupolyphaga sinensis
Erodium cicutarium
Euryale seed
Ergothioneine
Elk antler
Emblicanin
Ecdysteroids
Elthyl-Alpha-Guanido-Methyl-Ethanoate
Euglena gracilis
Ephedrine
European-Five Finger Grass
European Hornbeam
Embelia
Ecklonia
Enokitake
Folic Acid
Finger-Leaf Morning Glory
Flammulina velutipes
glucose
Himalayan Salt
Ketone Salts
Lotus
Little ironweed
Molasses
Milk Protein
Mistletoe
Mimosa
Orchid
Prickly Pear Cactus
Quinoa Protein
Spikenard
Sumac
Sweet Orange alcohol
Wheat
yohimbine
Zucchini

Other health conditions supported by vitamin C

Abrasions
Abscesses
Acne
Acquired Immune Deficiency Syndrome
Addictions (general remedies for)
Addison's Disease
Adrenal Fatigue
Age Spots
Aging (prevention)
Alcoholism
Allergies (food)
Allergies (respiratory)
Alzheimer's Disease
Anal Fistula or Fissure
Anemia
Antibiotics (alternatives to)
Antibiotics (side effects of)
Anxiety
Arteriosclerosis
Arthritis
Asthma
Athletic and Exercise Aids
Autism
Autoimmune Disorders
Bell's Palsy
Bites and Stings
Bladder Infection
Bleeding (external)
Bleeding (internal)
Blood Poisoning
Boils
Bronchitis
Bruises (healing)
Bruises (prevention)
Burns and Scalds
Cancer (natural therapy for)
Cancer (prevention)
Cancer Treatment (reducing side effects)
Canker Sores
Capillary Weakness
Carbuncles
Cardiovascular Disease
Cartilage Damage
Cataracts
Cervical Dysplasia
Chemical Poisoning
Chemotherapy (reducing side effects)
Chicken Pox
Cholesterol (high)
Chronic Obstructive Pulmonary Disorder
Cold Sores
Colds (antiviral)
Colds (decongestant)
Colds (general)
Colds (prevention)
Colds (with fever)
Colon (atonic)
Congestion
Congestion (bronchial)
Congestion (lungs)
Congestion (sinus)
Conjunctivitis
Contagious Diseases
Convalescence
Copper Toxicity
Cough (dry)
Cough (general)
Cuts
Cystic Breast Disease
Cystic Fibrosis
Debility
Dementia
Denture Sores
Depression
Diabetes
Diabetic Retinopathy
Environmental Pollution
Epstein Barr Virus
Eye Problems
Eyesight (poor)
Fatigue
Fatty Liver Disease
Free Radical Damage
Gall Stones
Gastritis
Gingivitis
Glaucoma
Gonorrhea
Gout
Hair (loss or thinning)
Hair Care (general)
Heart (weakness)
Heavy Metal Poisoning
Hemorrhoids
Hepatitis
Herpes
Hot Flashes
Hypertension
Infection
Infection (bacterial)
Infection (viral)
Infertility
Inflammation
Inflammatory Bowel Disorders
Influenza
Injuries
Knees (weak)
Laryngitis
Lead Poisoning
Lesions
Leucorrhea
Leukemia
Ligaments (torn or injured)
Liver Detoxification
Lyme Disease
Macular Degeneration
Mastitis
Measles
Memory and Brain Function
Menorrhagia
Menstrual Irregularity
Menstruation (scant)
Metabolic Syndrome
Mononucleosis
Mumps
Nose Bleeds
Oral Surgery
Osteoporosis
Pancreatitis
PMS (general)
PMS Type C
PMS Type H
Pneumonia
Post Partum Weakness
Pregnancy (herbs and supplements for)
Progesterone (low)
Prolapsed Uterus
Prostatitis
Radiation Sickness
Rashes and Hives
Restless Leg Syndrome
Rheumatoid Arthritis
Rhinitis
Rhinitis, Allergic
Rosacea
Scars / Scar Tissue
Schizophrenia
Scratches and Abrasions
Scurvy
Shingles
Shock
Sinus Infection
Skin (infections)
Skin Care (general)
Sore Throat
Spider Veins
Spinal Disks
Sprains
Strep Throat
Stretch Marks
Sunburn
Surgery (healing from)
Surgery (preparation for)
Teeth (loose)
Tendonitis
Thrush
Tickle in Throat
Tonsillitis
Tooth Extraction
Toxemia
Triglycerides (high)
Tuberculosis
Ulcerations (external)
Ulcers
Uric Acid Retention
Urinary Tract Infections
Vaginitis
Varicose Veins
Warts
Wounds and Sores
Wrinkles

Products containing vitamin C

Health Concerns

Brands

Evidence supporting the use of: Vitamin C
For the health condition: Fatigue

Table of Contents

Synopsis

Other ingredients used for Fatigue

Other health conditions supported by vitamin C

Products containing vitamin C

Health Concerns

Brands

Evidence supporting the use of: Vitamin CFor the health condition: Fatigue

Table of Contents

Synopsis

Other ingredients used for Fatigue

Other health conditions supported by vitamin C

Products containing vitamin C

Evidence supporting the use of: Vitamin C
For the health condition: Fatigue