Evidence supporting the use of: Quercetin
For the health condition: Arthritis

Links: Go back one page, Tool main page, Ingredients list, Health conditions list, Body systems list

Synopsis

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

Quercetin, a flavonoid found in many fruits and vegetables, has been investigated for its potential anti-inflammatory and antioxidant properties, which are relevant to arthritis. Scientific interest in quercetin's use for arthritis is primarily based on preclinical studies. In vitro (cell culture) and animal studies have shown that quercetin can inhibit the production of pro-inflammatory cytokines (such as TNF-α, IL-1β, and IL-6), decrease oxidative stress, and reduce cartilage degradation—mechanisms that are implicated in the pathogenesis of both osteoarthritis and rheumatoid arthritis.

However, human clinical evidence remains limited. A few small randomized controlled trials (RCTs) have reported modest benefits. For example, a 2017 RCT in women with rheumatoid arthritis found that quercetin supplementation (500 mg/day for 8 weeks) led to significant reductions in early morning stiffness, pain, and disease activity scores compared to placebo. Another small study in knee osteoarthritis patients suggested some improvement in symptoms with quercetin, but the results are not robust or consistent across all studies.

Overall, while the mechanistic rationale is strong and preliminary results are promising, the clinical evidence remains insufficient to recommend quercetin as a primary therapy for arthritis. Larger, high-quality trials are needed to confirm its efficacy and safety in this context. Thus, the use of quercetin for arthritis is currently supported more by emerging scientific evidence than by tradition, but its role should be considered adjunctive and investigational.

More about quercetin
More about Arthritis

Other ingredients used for Arthritis

3-(4-hydroxy-3-methoxyphenyl)prop-2-enoic acid
Abalone
Abies spectabilis
Abrus
Abuta
Acacetin
Achyranthes
Aconite
Actaea spicata
adrenal cortex
Ajuga
Akebia
Alantolactone
Albizia
Alfalfa
Algae
algal oil
Allicin
Allium tuberosum
Allspice
Aloe vera
alpha-humulene
alpha-linolenic acid (ALA)
alpha-lipoic acid
alpha-pinene
alpinia galangal
amber
American Liverleaf
amino acids
aminomonosaccharide
Amor seco
AMP-activated protein kinase (AMPK)
ampelopsin
anamu
Andrographis
andrographolide
Anemone
Angelica
animal Tissue
Anserina
anthocyanidins
anthocyanins
antler
apigenin
apocynin
apple cider vinegar
Aralia
Arani
Ardisia
Arisaema
arjunic acid
Ascophyllum nodosum
ash
ashwagandha
aspen
astaxanthin
Asteraceae
astragalin
astragaloside
atractylone
aucubin
avenacosides
avens
avocado
babassu
bacteria
baicalein
baicalin
Baikal Skullcap
balsam
bamboo
banyan
barbary matrimony vine
barbasco
barberry
Barleria
barrenwort
Basidiomycota
basil
Bassia scoparia
bayleaf
bee hive
bee pollen
bee products
bee propolis
bee venom
benzyl isothiocyanate
Bergenia
bergenin
bermuda grass
berry
beta caryophyllene
beta-glucan
betony
Bidens pilosa
big quaking grass
bioflavonoids
biota seed
birch
bishop\'s weed
bittersweet
black cumin
black currant
black galingale
black garlic
black ginger
black nightshade
black pepper
black poplar
black root
black seed
black tea
Black willow
blackberry
blackboard tree
Blepharis
blubber oil
blueberry
Boerhavia diffusa
bogbean
Bombax
bone marrow
bone protein
borage
borage oil
Borassus aethiopum
borassus palm
borneol
boron
Boswellia
Boswellic Acid
bovine
bovine cartilage / glycosaminoglycan
bovine protein
boxwood
broccoli
bromelain
Broussonetia
buckthorn
bugbane
Bulnesia sarmientoi
Bupleurum
bur-reed
burdock
burning bush
Butea monosperma
C-phycocyanin
cabbage
cactus
Caesalpinia crista
calamari oil
Calanus finmarchicus
camelina oil
Camellia sinensis
cannabichromene
cannabidiol
cannabigerol
Cannabis sativa oil
capillary artemisia
capsaicin
capsaicinoids
capsicum
carrot
Carthamus
cartilage
caryophyllene
cat's claw
caterpillar mushroom
cayenne pepper
cedar
Celastrus
celery
Centella asiatica
Centella triterpenes
Cetylated Fatty Acids
cherry
Chinese fleeceflower
Chinese mountain ant
Chinese pond turtle
Chinese raisintree
Chinese silkvine
Chlorophytum
chondroitin
chrysanthemum
chuchuhuasi
chymotrypsin
cinnamaldehyde
Cinnamomum
cinnamon
Citrus
clematis
Clerodendrum indicum
Clerodendrum indicum
Clerodendrum phlomidis
Clerodendrum trichotomum
clove
Cnidium
cod liver oil
collagen
collard
commiphora
conjugated linoleic acid (CLA)
copaiba oil
copper
Corallina officinalis
cordyceps
corktree
cortisol
cowage seed
cowherb
Crinum latifolium
cruciferous
cryptoxanthin
Curcuma
curcumen
curcumin
Curcuminoid
currant
curry leaf
cyanidin
cytokines
daphne
devil's claw
devil\'s club
DHA (docosahexaenoic acid)
Dihomo-gamma-linolenic acid
Dimethyl sulfoxide (DMSO)
Dimorphandra mollis
dioscorea
Dipsacus
diterpenes
docosahexaenoic Acid
dodder
dodeca-2E, 4E-dienoic acid isobutylamide
DPA (docosapentaenoic acid)
dulse
Dwarf Nettle
Echium
Ecklonia
Eclipta
eicosapentaenoic acid
elephant\'s head
elk antler
emblicanin
emu oil
enzyme blend
enzymes blend (proprietary)
EPA (eicosapentaenoic acid)
epigallocatechin gallate (EGCG)
Erodium cicutarium
Erythropalum scandens
essential oil blend
eugenol
Eupolyphaga sinensis
European Elder
European five-finger grass
evening primrose oil
evening primrose oil
Evodia
fang-feng
fat liver oil
fatty acids
ferulic acid
Ficus religiosa
Ficus simplicissima
fish
fish oil
fish protein
flavones
flavonoids
flavonols
flavonones
flaxseed
Flemingia philippinensis
Flueggea suffruticosa
fo-ti
frankincense
fructoborate
fruit
fucoidan
fulvic acid
fungus
Galbanum
gamma linolenic acid (GLA)
gamma tocopherol
ganoderma
gastrodia
genipap
genistein
Gentiana macrophylla
geranium
Gigartina
ginger
ginseng
Ginsenosides
Glechoma hederacea
glucosamine
Glycosaminoglycans
Gnaphalium
goji berry
golden eye-grass
golden ragwort
Golden Willow
gooseberry
gotu kola
green tea
green-lipped mussel
guelder rose
guggul
Guggulsterones
Gumweed
Gypenoside
Haematococcus pluvialis
haliotis
Harpagoside
heal-all
heartwood
Helicteres isora
Hellebore
Hemidesmus
hemp
hemp oil
Hempnettle
Herb Robert
herbal blend (proprietary)
honey
horny goat weed
horsetail
Huang hua
Humulones
hyaluronic acid
hydroxytyrosol
Hyperoside
Ilex
Indian coraltree
Indian fagonia
Indian frankincense
Indian kinotree
Indian nightshade
Indian sarsparilla
Indian tinospora
indigo leaves
iridoid glycosides
iridoids
isoliquiritigenin
isoquinoline alkaloids
Japanese kadsura
Jatoba
Jatropha macrantha
jiaogulan
juglans cinerea
juniper berries
Kachnar
Kaempferol
kale
knotweed
Kokilaksha
krill oil
kudzu
Labdanum
labrador tea
Lebbek
Ledebouriella
lemongrass
Lesser speargrass
lichen
Ligusticum
ligustilides
Ligustrazin
linalool
Lindera
lingzhi
linseed oil
Lithothamnion
Litsea
Lophira lanceolata
Loranthus
lotus
luffa
luteolin
Lycium
Maclura tricuspidata
madder
magnesium
magnolol
Malay bush
Manchurian thorn
mangiferin
mangostin
Marine fat
Marine lipid
Marine protein
Maslinic acid
Matapalo Tree
Meadowsweet
Melia
Menthol oil
Mesua
Methylsulfonylmethane (MSM)
Mezoneuron benthamianum
Microbial enzymes (proprietary)
Microcrystalline hydroxyapatite concentrate (MCHC)
Microtea debilis
Millet
Millettia
Monoterpenes
Morinda
Moringa
Morus
Mucopolysaccharide
Mugwort
Mulberry
Mustard
mustard seed
Myrcene
Myricitrin
Myristoleate
Myrrh
N-acetyl-cysteine (NAC)
N-acetyl-glucosamine
Naringenin
Nettle
Niacinamide (vitamin B3)
Nigella seed
Night jessamine
Nimbidin
Nobiletin
noni
Nutmeg
Nymphaea nouchali
Ocotillo
Oldenlandia diffusa
oleanolic acid
oleic acid
Oleoperin
Oligomeric proanthocyanidins
olive
omega-3 fatty acids
orange
oregon grape
Oroxylum indicum
Osthole
paeoniflorin
Palmitoylethanolamide (PEA)
Pansit-pansitan
papain
papaya
Pata de Vaca
Patrinia
Pentacyclic triterpenoids
Pentatropis capensis
peony
Pepper
Peptides
Persimmon
Petiveria
Phaeophyceae
Phellodendron
phellodendron amurense
phenolic compounds
Phenylpropanoids
phlorotannins
phospholipids
Phyllanthus
Physalis angulata
phytocannabinoids
pine bark
pineapple
Piper chaba
Piper nigrum
Piperine
Plankton
plantain
Pluchea
Plumbago zeylanica
Pokeweed
pollen
Polydatin
Polygonum
polymethoxylated flavones
polyphenols
Polypodium
polyunsaturated fat
pomegranate
poplar
Portulaca
pregnenolone
Premna
prepared aconite tuber
procyanidin
proteoglycans
proteolytic enzymes
Prunus
Psacalium peltatum
pumpkin
punarnava
purslane
Pycnogenol
Pyrola
Qin Jiao
Queen's Delight
quercetin
raspberry
reishi mushroom
resveratrol
rhizome
Rhododendron
rockweed
Rooibos
root tuber
Rosa roxburghii
rose hips
rosemary
rosmarinic acid
royal jelly
Rubia cordifolia
Rubiaceae
Rubus
rue
Ruscogenins
Ruscus
Safed musli
Sagebrush
Salmon Oil
Salvia
Salvianolic acid
Sambucus nigra
Sandalwood
Sandy Everlasting
saponins
sarsaparilla
Schizochytrium
schizonepeta
Scoparia dulcis
Scopoletin
scrophularia root
seaweed
Self-Heal
Semecarpus anacardium
Sensitive Plant
Serrapeptase
serratiopeptidase
sesame
Sesamin
Sesbania
Sesquiterpenes
Sete sangrias
Shark Liver Oil
Shataverins
shen-chu
Shilajit
Shogaol
Sichuan Lovage
Sickle-leaf hare's ear
Sicklepod
Siegesbeckia
silk tree
Silkmoth
Sinapis arvensis
Sinomenium acutum
Skunkvine
Smartweed
Smilagenin
smilax
Snakeroot
Solanaceae
Solanum indicum
solomon's seal
Sophora
soursop
Southern Tsangshu
Spatholobus
specialized pro-resolving mediators (SPMs)
Sphaeranthus indicus
Spikenard
spinach
Spiraea
spirulina
spruce
squawvine
Stachytarpheta cayennensis
Stearidonic acid
Stellaria dichotoma
Stereospermum
Stilbenoid
strawberry
strontium
Sulfated polysaccharide
suma
Sumac
Sweet Bay
sweetgums
Sword Bean
Szechuan lovage
Tagetes
Tamarind
Tanshinone
Taraxacin
Taraxasterol
Taraxol
Taxillus chinensis
Taxillus sutchuenensis
Tea
Terminalia
Terpenoids
thyme
Thymoquinone
Tillandsia
Tinospora cordifolia
Toadflax
trace minerals
Tree of heaven
Tremella
Triphala
Triterpenes
Troxerutin
Tulbaghia
Tumerone
turmeric
typhonium
ubiquinol
Uncaria
Ursolic Acid
Verbascoside
Veronica
Vine tea
Viola
Violet
vitamin B
vitamin B6
vitamin C
vitamin D
vitamin D3
vitamin E
Vitexicarpin
Vitexin
Walnut
Water Pepper
Watercress
wheat grass
White Poplar
white willow
Wild yam
Willow
Willow Bracket
Wintergreen
Withanolides
Wrightia tinctoria
Wulinshen
xanthium (cockleburs)
Xanthone
Xanthophyll
Yellow root
Yellow-Fruit Nightshade
Yerba buena
Yucca
Yuzu
zanthoxylum
Zinc
Zingerone
Zingibain
Zingiberene
Zucchini

Products containing quercetin

Pure Encapsulations Acerola/Flavonoid
Thorne Advanced Nutrients Multivitamin
Pure Encapsulations AI Formula
Pure Encapsulations Aller-Essentials
Pure Encapsulations Aller-Essentials
Designs For Health ArthroSoothe™ Supreme
Pure Encapsulations Athletic Nutrients
Pure Encapsulations Balanced Immune
Designs For Health BioFizz® Immune
Metagenics CardioLux® HDL
Designs For Health C+BioFizz®
Douglas Laboratories Cysto Renew ®
Pure Encapsulations Daily Immune
Integrative Therapeutics Detoxication Factors
Integrative Therapeutics Detoxication Factors
Designs For Health DFH Complete Multi™
Designs For Health DFH Complete Multi™ with Copper
Designs For Health DFH Complete Multi™ with Copper & Iron
Thorne Diabenil
Designs For Health DopaBoost™
Designs For Health Electrolyte Synergy™
Pure Encapsulations Essential-C & Flavonoids
Pure Encapsulations Essential-C & Flavonoids
Designs For Health GI Revive®
Designs For Health GI Revive®
Designs For Health H-S-N Radiance™
Pure Encapsulations Hist Reset
Designs For Health HistaEze™
Metagenics Immune Active
Metagenics Immune Defense Pack
Designs For Health Inflammatone™
Designs For Health Inflammatone™
Designs For Health Inflammatone™
Vitabase Life's Essentials Plus
Metagenics Multigenics®
Metagenics Multigenics Chewable Orange
Metagenics Multigenics Intensive Care
Metagenics Multigenics Intensive Care without Iron
Metagenics Multigenics without Iron
Pure Encapsulations NeuroMood Pure Pack
Pure Encapsulations NeuroPure
Designs For Health OcuForce™
Designs For Health PaleoCleanse Plus™
Designs For Health PaleoCleanse Plus™
Designs For Health PaleoCleanse Plus™ Detox Program
Designs For Health PaleoCleanse Plus™Chocolate Detox Kit
Designs For Health PhytoBiome™
Metagenics PhytoGanix® Tropical Fruit
Designs For Health Plant Protein Cleanse
Designs For Health Plant Protein Cleanse Plus™ 570g
Pure Encapsulations Polyphenol Nutrients
Pure Encapsulations Polyphenol Nutrients
Thorne PolyResveratrol-SR
Designs For Health Primal Multi™
Vitabase Prostate Complex (Formerly Prostate Complete)
Pure Encapsulations PureDefense
Pure Encapsulations PureDefense with NAC
Pure Encapsulations PureDefense with NAC
Pure Encapsulations PureLean® Protein
Pure Encapsulations Quercetin
Pure Encapsulations Quercetin
Metagenics Quercetin 500
Vitabase Quercetin Plus
Designs For Health Quercetin-Ascorbate
Douglas Laboratories Quercetin-Bromelain Complex
Thorne Quercetin Complex Quercenase
Designs For Health Quercetin + Nettles
Thorne Quercetin Phytosome
Pure Encapsulations Quercetin UltraSorb
Thorne ResveraCel
Designs For Health Resveratrol Supreme
Designs For Health Senolytic Synergy
Metagenics Sinuplex®
Designs For Health Stellar C™
Vitabase Super Antioxidant Formula
Pure Encapsulations Th2 Modulator
Designs For Health Ultimate Antiox Full Spectrum
Douglas Laboratories Ultra Preventive
Douglas Laboratories Ultra Preventive
Douglas Laboratories Ultra Preventive ®-EZ Swallow
Douglas Laboratories Ultra Preventive® X
Douglas Laboratories Ultra Protein Green
Metagenics UltraInflamX Plus 360°® Chocolate/Orange
Metagenics UltraInflamX Plus 360° Mango
Metagenics UltraInflamX Plus 360° Mango
Metagenics UltraInflamX Plus 360° Orange
Metagenics UltraInflamX Plus 360° Original Spice
Metagenics UltraInflamX Plus 360° Pineapple/Banana
Metagenics UltraInflamX Plus 360° Pineapple/Banana
Pure Encapsulations Uric Acid Formula
Designs For Health Vessel Forte™
Vitabase Vision Support
Integrative Therapeutics Vitamin C with Quercetin