Evidence supporting the use of: Green tea
For the health condition: Colds (with fever)

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Synopsis

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

Green tea (Camellia sinensis) has been traditionally consumed in many Asian cultures as a remedy for colds and fevers. Historical records from traditional Chinese and Japanese medicine suggest that green tea was often recommended for its perceived cooling and detoxifying effects, making it a popular beverage during fevers or respiratory illnesses. The polyphenols and catechins in green tea, particularly epigallocatechin gallate (EGCG), have demonstrated mild antimicrobial and antiviral properties in laboratory studies, which could theoretically provide some benefit against cold viruses. Additionally, green tea contains moderate amounts of caffeine and the amino acid L-theanine, which may have gentle immune-modulating and soothing effects.

However, direct scientific evidence supporting the use of green tea specifically for treating colds with fever is limited. Most clinical studies focus on general immune support or prevention, rather than acute treatment of colds or fever. Some small studies suggest green tea gargles may reduce upper respiratory infections in certain populations, but these findings are not robust enough to warrant high confidence. Thus, while green tea is traditionally used to support colds and fevers and has plausible mechanisms that could be beneficial, strong scientific validation for this use is lacking, leading to a modest evidence score.

More about green tea
More about Colds (with fever)

Other ingredients used for Colds (with fever)

Acacia
Aconite
Aerva lanata
Agastache
Ajuga
Aloe vera
alpinia galangal
Amomum
Amor seco
Andrographis
andrographolide
anthocyanins
Arani
Ardisia
Asam gelugor
Asarum heterotropoides
aster root
Asteraceae
atractylone
avens
Baccharoides anthelmintica
bael
Baikal Skullcap
Baphicacanthus cusia
basil
Bassia scoparia
bayleaf
bee products
bermuda grass
bilberry
bishop\'s weed
bitter grass
black cumin
black currant
black galingale
black nightshade
blackboard tree
blueberry
boxthorne
buckthorn
bur-reed
capillary artemisia
capsaicinoids
Celosia
chamomile
Chinese raisintree
chrysophanics
cinnamaldehyde
Cistus
clove
coconut milk
common madia
cowage seed
cowherb
dragonhead
Eclipta
elderberry
flavoglycosides
forsythia
fruit
gamma-terpinene
garlic bulb
ginger
Glechoma hederacea
Gnaphalium
grape
green chiretta
green tea
hemp
honey
Horsemint
hyacinth bean
Indian fagonia
indigo leaves
Isatis
isoquinoline alkaloids
Laggera pterodonta
lemon
Lewis's monkey flower
licorice root
Ligusticum
linalool
little ironweed
lodhtree
long pepper
luffa
mallow
Melia
Monoterpenes
Mugwort
Mushroom
nut grass
Onosma bracteatum
Oroxylum indicum
Oxystelma
Pansit-pansitan
Paris polyphylla
pear
Peucedanum
Phenylpropanoids
Piper nigrum
pistacia integerrima gall
plantain
pomegranate
quercetin
rhizome
rosemary
sage
Salvia
Scabrous Gentian
Sesbania
Sesquiterpenes
Shogaol
Sickle-leaf hare's ear
Smartweed
Solanaceae
Solanum indicum
Southern Tsangshu
Sphaeranthus indicus
Sweet Annie
sweet flag
Tamaricaceae
Tayuya
Tea
thyme
Thymus
Trichosanthes
turmeric
Umckaloabo
Vervain
Viola
vitamin C
vitamin D
Water Pepper
Winter Savory
xanthium (cockleburs)
Yerba santa
Zinc
Zingerone
Zingiberene

Other health conditions supported by green tea

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
Breast Lumps
Cancer (natural therapy for)
Cancer (prevention)
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)
Fibroids (uterine)
Free Radical Damage
Fungal Infections
Glaucoma
Hemochromatosis
Irritable Bowel Syndrome
Parkinson's Disease
Perspiration (excessive)
PMS (general)
Polyps
Rosacea
Skin (oily)
Abdominal Pain
Abscesses
Body Odor
Cancer Treatment (reducing side effects)
Fatigue
Gastritis
Gingivitis
Hair (loss or thinning)
Headache (general)
Hypertension
Inflammation
Influenza
Liver Detoxification
Memory and Brain Function
Oral Surgery
Psoriasis
Stress
Triglycerides (high)
Ulcers
Urinary Tract Infections
Wrinkles