Evidence supporting the use of: Green tea
For the health condition: Circulation (poor)

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Synopsis

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

Green tea (Camellia sinensis) is widely consumed for its potential health benefits, including effects on cardiovascular health and circulation. The primary active compounds in green tea are polyphenols, particularly catechins like epigallocatechin gallate (EGCG). Scientific studies have investigated green tea’s role in improving endothelial function, reducing oxidative stress, and lowering blood pressure—all of which are related to circulatory health.

Several clinical trials and observational studies suggest that regular green tea consumption may modestly improve endothelial function, which is crucial for healthy circulation. Some studies have shown that green tea can help lower blood pressure and reduce arterial stiffness, both of which contribute to improved blood flow. The proposed mechanisms include antioxidant effects, enhancement of nitric oxide production (which relaxes blood vessels), and anti-inflammatory properties.

However, while there is a plausible scientific basis and some supportive clinical evidence, the overall strength of the evidence is moderate to weak. Most studies report only modest improvements, and not all findings are consistent. Green tea is not considered a primary or standalone treatment for poor circulation, but it may offer supportive cardiovascular benefits as part of a healthy lifestyle. Therefore, its use for circulation is scientifically plausible but not strongly validated, warranting a rating of 2 out of 5 for evidence strength.

More about green tea
More about Circulation (poor)

Other ingredients used for Circulation (poor)

acetyl l-carnitine
ajoene
algal oil
alpha-linolenic acid (ALA)
amino acids
anthocyanins
arjun tree
ashwagandha
asparagus
astaxanthin
astragalus
beet
bergamot
berry flavor
bilberry
black cumin
black currant
black garlic
black pepper
sesame
black tea
blueberry
bromelain
bupleurum falcatum
burdock
butcher's broom
caffeine
capsaicinoids
cat's claw
caterpillar mushroom
celery
chen pi
cherry
Chinese salvia root
chokeberry
cinnamon
citrus bioflavonoids
citrus sinensis (proprietary)
clove
coenzyme Q10 (CoQ10)
coleus forskohlii
cordyceps
turmeric
curcumin
d-alpha tocopherol
DHA (docosahexaeonic acid)
diallyl disulfide (DADS)
diallyl trisulfide (DATS)
dong quai root
eleuthero
EPA (eicosapentaenoic acid)
fish oil
fish protein
flavonols
flaxseed
fruit and vegetable blend (proprietary)
garlic bulb
ginger
ginkgo biloba
ginseng
gooseberry
gotu kola
grape
onion
green tea
greens blend (proprietary)
hawthorn
hesperetin
hesperidin
hibiscus
horse chestnut
horseradish
Indian tinospora
iron
knotweed
kudzu
l-arginine
l-carnitine
l-citrulline
lovage
mackerel
magnesium
marine lipid
moringa
mustard seed
naringin
nattokinase
nettle
niacin (vitamin B3)
niacinamide (vitamin B3)
nicotinamide riboside
olive
omega-3 fatty acids
orange
oyster mushroom
pine bark
policosanol
pomegranate
quercetin
redcurrant
reishi mushroom
resveratrol
rhizome
rose hips
rosemary
rutin
safflower oil
sardines
shiitake mushroom
black ginger
spinach
tocotrienols
triphala
ubiquinol
vegetable and fruit blend (proprietary)
vegetable blend (proprietary)
vitamin B
vitamin E
seaweed
water
watercress
watermelon
mulberry
sarsaparilla
suma
jiaogulan
tangerine
gastrodia
cardamom
atractylodes
capsicum
Indian bael
inula racemosa
punarnava
commiphora
smilax
blackboard tree
caesalpinia crista
peony
lingzhi
lingusticum wallichii
prickly ash
siler root
cistanche
dioscorea
dodder
ganoderma
morinda
zanthoxylum
birch
polyphenols
purslane
yerba mate
biota seed
goji berry
herbal blend (proprietary)
Sichuan pepper
yohimbe
cocoa
AMP-activated protein kinase (AMPK)
enzymes blend (proprietary)
cayenne pepper
ashitaba
2-(nitrooxy)ethyl 2-amino-3-methylbutanoate
3-(4-hydroxy-3-methoxyphenyl)prop-2-enoic acid
Aralia
Arjuna
Arginine Alpha Ketoglutarate
Antler
Autumn elaeagnus
Arginine Creatine
Arginine nitrate
Angelica
Aronia melanocarpa
Allicin
Arginine aspartate
Achyranthes
Auricularia
Adrenergic amines
Alpha-Lipoic Acid
Astragaloside
anthocyanidins
Asteracea
Arjunic Acid
Alliin
anthocyanosides
Allium tuberosum
Arginine silicate
Atractylone
Bishop's Weed
Butea monosperma
Black galingale
berry
Bur-Reed
Bioflavonoids
Bee products
Buddha's Hand
Buckwheat
Bassia scoparia
Boerhavia diffusa
Borneol
Coumarin
Centella triterpenes
Chinese Silkvine
Cinnamomum
Chinese Mountain Ant
Carqueja
Calycosin
Capsinoids
Codonopsis
Capillary Artemisia
Cyanidin
Curcuminoid
Citrus
Capsaicin
Catecholamine
Cowherb
Curcumen
Centella asiatica
Coca
Chocolate
Curcuma
Chestnut
Cinnamaldehyde
Costus
Carthamus
cola nut
Currant
Diallyl sulfide
Diosmin
Dismutase
Danshen
Dong Quai
Date
Diosmetin
Dodeca-2E, 4E, 8Z, 10Z/Etetraenoic Acid Isobutylamide
epicatechin
Eupolyphaga sinensis
Elk antler
Evodiamine
Eicosapentaenoic Acid
Essential Oil Blend
Ephedrine
Ethylenediaminetetraacetic acid (EDTA)
European-Five Finger Grass
Echium
Fruit
Flavonoids
Fo-Ti
Flat-stem milk-vetch
Fatty acids
Flavanones
Fagopyrum
Flavoglycosides
Flavans
Forskolin
Flavonones
Flavanols
Flavones
Ginsenosides
Glycoside
Garlic
Ginkgo Flavone Glycoside
Mustard
Mistletoe
Pistachio
Sumac
Sweet Orange alcohol
yohimbine
Zucchini

Other health conditions supported by green tea

Abdominal Pain
Abscesses
Acne
Addictions (coffee, caffeine)
Age Spots
Aging (prevention)
Allergies (food)
Allergies (respiratory)
Alzheimer's Disease
Antibiotics (alternatives to)
Anxiety
Anxiety Disorders
Appetite (excessive)
Arteriosclerosis
Arthritis
Asthma
Athletic and Exercise Aids
Autoimmune Disorders
Belching
Benign Prostate Hyperplasia
Bites and Stings
Bleeding (internal)
Blood in Urine
Bloodshot Eyes
Body Odor
Breast Lumps
Cancer (natural therapy for)
Cancer (prevention)
Cancer Treatment (reducing side effects)
Cardiovascular Disease
Cartilage Damage
Cellulite
Cervical Dysplasia
Chemotherapy (reducing side effects)
Chicken Pox
Cholesterol (high)
Cholesterol (low)
Chronic Obstructive Pulmonary Disorder
Circulation (poor)
Circulation (to the brain)
Cirrhosis of the Liver
Colds (antiviral)
Colds (decongestant)
Colds (general)
Colds (prevention)
Colds (with fever)
Colic (children)
Colitis
Colon (atonic)
Colon (spastic)
Concentration (poor)
Congestion
Congestion (bronchial)
Congestion (lungs)
Congestion (lymphatic)
Congestion (sinus)
Conjunctivitis
Constipation (adults)
Contagious Diseases
Convalescence
Cough (damp)
Cough (dry)
Cough (general)
Cough (spastic)
Cramps (menstrual)
Crohn's Disease
Cuts
Cystic Breast Disease
Cystic Fibrosis
Cytomealovirus
Dandruff
Debility
Dementia
Denture Sores
Depression
Dermatitis
Diabetes
Diabetic Retinopathy
Diarrhea
Digestion (poor)
Down Syndrome
Endometriosis
Epstein Barr Virus
Eye Infections
Eye Problems
Eyes (red or itching)
Fatigue
Fibroids (uterine)
Free Radical Damage
Fungal Infections
Gastritis
Gingivitis
Glaucoma
Hair (loss or thinning)
Headache (general)
Hemochromatosis
Hypertension
Inflammation
Influenza
Irritable Bowel Syndrome
Liver Detoxification
Memory and Brain Function
Oral Surgery
Parkinson's Disease
Perspiration (excessive)
PMS (general)
Polyps
Psoriasis
Rosacea
Skin (oily)
Stress
Triglycerides (high)
Ulcers
Urinary Tract Infections
Wrinkles