green sencha tea

green tea (Camellia sinensis)

Entire Monograph

Reported Uses

NOTE: see Herb & Supplement Effectiveness Rating Definitions table
acne [Insufficient Evidence]
amyloidosis [Insufficient Evidence]
anxiety [Insufficient Evidence]
athletic performance [Insufficient Evidence]
beta-thalassemia [Insufficient Evidence]
cancer prevention, bladder [Insufficient Evidence]
cancer prevention, breast [Insufficient Evidence]
cancer prevention, colorectal [Insufficient Evidence]
cancer prevention, endometrial [Possibly Effective]
cancer prevention, esophageal [Insufficient Evidence]
cancer prevention, gastric [Insufficient Evidence]
cancer prevention, kidney [Insufficient Evidence]
cancer prevention, liver [Insufficient Evidence]
cancer prevention, lung [Insufficient Evidence]
cancer prevention, nasopharyngeal [Insufficient Evidence]
cancer prevention, oral [Insufficient Evidence]
cancer prevention, ovarian [Possibly Effective]
cancer prevention, pancreatic [Insufficient Evidence]
cardiovascular disease prevention [Possibly Effective]
cervical CA [Insufficient Evidence]
cervical dysplasia [Insufficient Evidence]
chronic fatigue syndrome [Insufficient Evidence]
cognitive decline, age-related [Insufficient Evidence]
cognitive function [Insufficient Evidence]
cognitive impairment [Insufficient Evidence]
colorectal adenoma [Insufficient Evidence]
common cold [Insufficient Evidence]
COPD [Insufficient Evidence]
Crohn disease [Insufficient Evidence]
dementia [Insufficient Evidence]
dental plaque [Insufficient Evidence]
depression [Insufficient Evidence]
diabetes mellitus, type 2 [Insufficient Evidence]
diabetic neuropathy [Insufficient Evidence]
diarrhea, radiation-induced [Insufficient Evidence]
Down syndrome [Insufficient Evidence]
dry eye disease [Insufficient Evidence]
dysmenorrhea [Insufficient Evidence]
fracture [Insufficient Evidence]
gingivitis [Insufficient Evidence]
headache [Insufficient Evidence]
HTN [Insufficient Evidence]
human papillomavirus [Likely Effective]
hyperlipidemia [Possibly Effective]
hypotension [Insufficient Evidence]
infertility in patients of childbearing potential [Insufficient Evidence]
influenza [Insufficient Evidence]
Japanese cedar pollinosis [Insufficient Evidence]
leukemia [Insufficient Evidence]
mental alertness [Insufficient Evidence]
metabolic dysfunction-associated steatotic liver disease [Insufficient Evidence]
metabolic syndrome [Insufficient Evidence]
MI prevention [Insufficient Evidence]
multiple myeloma [Insufficient Evidence]
nausea/vomiting, radiation-induced [Insufficient Evidence]
nephrolithiasis prevention [Insufficient Evidence]
non-Hodgkin lymphoma [Insufficient Evidence]
obesity [Insufficient Evidence]
oral leukoplakia [Insufficient Evidence]
osteopenia [Insufficient Evidence]
osteoporosis [Insufficient Evidence]
overall mortality [Insufficient Evidence]
pain, postop [Insufficient Evidence]
Parkinson disease [Insufficient Evidence]
periodontitis [Insufficient Evidence]
pneumonia [Insufficient Evidence]
polycystic ovary syndrome [Insufficient Evidence]
prostate CA [Insufficient Evidence]
radiation dermatitis [Insufficient Evidence]
skin CA [Insufficient Evidence]
SLE [Insufficient Evidence]
stress [Insufficient Evidence]
striae distensae (stretch marks) [Insufficient Evidence]
stroke prevention [Insufficient Evidence]
sunburn [Insufficient Evidence]
tinea pedis [Insufficient Evidence]
tooth extraction [Insufficient Evidence]
ulcerative colitis [Insufficient Evidence]
URI [Insufficient Evidence]
UTI [Insufficient Evidence]
wrinkled skin [Insufficient Evidence]

Reported Doses

Safety/efficacy may not be established; reported doses may be derived from limited or potentially inadequate studies with variable regimens, multi-ingredient products, or where concentration of active ingredients may vary widely

Special Note

[formulation clarification]
Info: may include tea, beverages or extracts; green tea products contain polyphenols, such as catechin, including epigallocatechin-3-gallate (EGCG), and varying amounts of caffeine; see sinecatechins for FDA-approved Rx product; all other preparations are not FDA-approved

Effectiveness Ratings

[see Herb & Supplement Effectiveness Rating Definitions table]

acne

[Insufficient Evidence]
Dose: apply 1-5% EGCG solution topically bid

amyloidosis

[Insufficient Evidence]
Dose: 500-700 mg EGCG PO qd; Info: used as tea or capsules

athletic performance

[Insufficient Evidence]
Dose: 945 mg/day EGCG PO divided tid; Alt: 640 mg polyphenols PO x1 given 90min before exercise

beta-thalassemia

[Insufficient Evidence]
Dose: 3 cups green tea PO qd; Info: used with standard tx

cancer prevention, breast

[Insufficient Evidence]
Dose: 3 or more cups green tea PO qd; Info: >12 cups/day associated with significant adverse effects, including tachyarrhythmia, sleep disturbance

cancer prevention, gastric

[Insufficient Evidence]
Dose: 10 or more cups green tea PO qd; Info: >12 cups/day associated with significant adverse effects, including tachyarrhythmia, sleep disturbance

cancer prevention, kidney

[Insufficient Evidence]
Dose: 5 or more cups green tea PO qd; Info: >12 cups/day associated with significant adverse effects, including tachyarrhythmia, sleep disturbance

cancer prevention, liver

[Insufficient Evidence]
Dose: 4 or more cups green tea PO qd; Info: >12 cups/day associated with significant adverse effects, including tachyarrhythmia, sleep disturbance

cancer prevention, lung

[Insufficient Evidence]
Dose: 7-10 cups green tea PO qd

cancer prevention, oral

[Insufficient Evidence]
Dose: 500-1000 mg/m^2/dose green tea extract PO tid

cancer prevention, ovarian

[Possibly Effective]
Dose: 2 or more cups green tea PO qd; Info: >12 cups/day associated with significant adverse effects, including tachyarrhythmia, sleep disturbance

cardiovascular disease prevention

[Possibly Effective]
Dose: 1-5 cups green tea PO qd; Alt: 300-1500 mL green tea PO qd

cervical dysplasia

[Insufficient Evidence]
Dose: 200 mg green tea extract PO qd

cognitive decline, age-related

[Insufficient Evidence]
Dose: 3 g green tea powder PO qd; Alt: 336.4 mg catechins PO qd

cognitive function

[Insufficient Evidence]
Dose: 170 mg catechins PO qd; Alt: 50-150 mg PO x1 given 30min and 120min after meal

cognitive impairment

[Insufficient Evidence]
Dose: 720 mg green tea extract PO bid; Alt: 2 or more cups green tea PO qd; Info: >12 cups/day associated with significant adverse effects, including tachyarrhythmia, sleep disturbance

colorectal adenoma

[Insufficient Evidence]
Dose: 1.5 g green tea extract PO qd; Alt: 150 mg EGCG PO bid

dementia

[Insufficient Evidence]
Dose: 1 or more cups green tea PO qd; Info: >12 cups/day associated with significant adverse effects, including tachyarrhythmia, sleep disturbance

dental plaque, peds patients

[Insufficient Evidence]
Dose: 2.5-5% mouthwash swish/spit bid; Info: for patients 10-14 yo; used with ginger extract

depression

[Insufficient Evidence]
Dose: 1 or more cups green tea PO qd; Info: >12 cups/day associated with significant adverse effects, including tachyarrhythmia, sleep disturbance

diabetes mellitus, type 2

[Insufficient Evidence]
Dose: 1 or more cups green tea PO qd-qwk; Info: >12 cups/day associated with significant adverse effects, including tachyarrhythmia, sleep disturbance

diabetic neuropathy

[Insufficient Evidence]
Dose: 500 mg decaffeinated green tea extract PO tid

diarrhea, radiation-induced

[Insufficient Evidence]
Dose: 450 mg PO qd

dry eye disease

[Insufficient Evidence]
Dose: apply green tea extract topically to eye(s) tid

gingivitis, peds patients

[Insufficient Evidence]
Dose: 2.5-5% mouthwash swish/spit bid; Info: for patients 10-14 yo; used with ginger extract

HTN

[Insufficient Evidence]
Dose: 3 g/150 mL green tea PO tid; Alt: 379-1500 mg green tea extract PO qd

hyperlipidemia

[Possibly Effective]
Dose: 150-2500 mg catechins/day PO divided qd-tid

hypotension

[Insufficient Evidence]
Dose: 400 mL green tea PO qd

influenza

[Insufficient Evidence]
Dose: 270 mg EGCG PO qd; Alt: 5 or more cups green tea PO qwk; Info: >12 cups/day associated with significant adverse effects, including tachyarrhythmia, sleep disturbance

Japanese cedar pollinosis

[Insufficient Evidence]
Dose: 350 mL green tea PO bid; Info: tea standardized to contain 5.83-6.72 mg O-methylated catechin/100 mL

metabolic dysfunction-associated steatotic liver disease

[Insufficient Evidence]
Dose: 700 mL green tea (1080 mg catechins) PO qd; Alt: 500-1000 mg green tea extract PO qd; 600 mg catechins PO qd

MI prevention

[Insufficient Evidence]
Dose: 3 or more cups green tea PO qd; Info: >12 cups/day associated with significant adverse effects, including tachyarrhythmia, sleep disturbance

obesity, adult patients

[Insufficient Evidence]
Dose: 440-460 mg EGCG PO qd; Alt: 234-886 mg catechins/day PO divided qd-bid; 530 mg decaffeinated green tea extract PO bid; 270 mg EGCG/day PO divided bid; 500 mg green tea PO qd; 300 mg green tea extract PO bid; 10 g powdered green tea PO bid; 3-4 cups green tea PO qd

obesity, peds patients

[Insufficient Evidence]
Dose: 576 mg catechins PO qd in patients 6-16 yo; Alt: 400 mg decaffeinated green tea polyphenols PO qd in patients 6-10 yo

oral leukoplakia

[Insufficient Evidence]
Dose: 3 g green tea/day PO divided qid plus 10% solution topically tid

osteopenia

[Insufficient Evidence]
Dose: 1-3 cups green tea PO qd; Alt: 500 mg polyphenols PO qd

osteoporosis

[Insufficient Evidence]
Dose: 1-3 cups green tea PO qd

overall mortality

[Insufficient Evidence]
Dose: 5 or more cups green tea PO qd; Info: >12 cups/day associated with significant adverse effects, including tachyarrhythmia, sleep disturbance

pain, postop

[Insufficient Evidence]
Dose: 15 mL swish/spit bid; Info: 5% green tea extract solution

Parkinson disease

[Insufficient Evidence]
Dose: 1 or more cups green tea PO qd; Info: >12 cups/day associated with significant adverse effects, including tachyarrhythmia, sleep disturbance

periodontitis

[Insufficient Evidence]
Dose: 1.55% green tea extract candies PO qd; Alt: apply 1% green tea extract gel topically to periodontal pocket x1

polycystic ovary syndrome

[Insufficient Evidence]
Dose: 1000-2000 mg green tea PO qd; Alt: 1620 mg EGCG PO qd; 500 mg PO bid x1wk, then 1500 mg PO qd

prostate CA

[Insufficient Evidence]
Dose: 200 mg catechins PO tid; Alt: 400 mg EGCG PO qd; 7 or more cups green tea PO qd; Info: >12 cups/day associated with significant adverse effects, including tachyarrhythmia, sleep disturbance

radiation dermatitis

[Insufficient Evidence]
Dose: 0.05 mL/cm^2 (660 mcmol/L EGCG) spray over radiation field tid; Start: 1st day of XRT

SLE

[Insufficient Evidence]
Dose: 500 mg green tea extract PO bid

stress

[Insufficient Evidence]
Dose: 300 mg green tea extract PO qd

striae distensae (stretch marks)

[Insufficient Evidence]
Dose: apply 3% green tea extract cream topically bid

stroke prevention

[Insufficient Evidence]
Dose: 1 or more cups green tea PO qd; Info: >12 cups/day associated with significant adverse effects, including tachyarrhythmia, sleep disturbance

sunburn

[Insufficient Evidence]
Dose: 540-1402 mg catechins PO qd

tinea pedis

[Insufficient Evidence]
Dose: 0.1% green tea solution footbath x15min qd

tooth extraction

[Insufficient Evidence]
Dose: apply 0.5% green tea extract gel topically x1 post procedure, then tid x7 days

ulcerative colitis

[Insufficient Evidence]
Dose: 200-400 mg green tea extract PO bid

UTI

[Insufficient Evidence]
Dose: 2000 mg green tea extract PO qd; Info: used with sulfamethoxazole/trimethoprim

wrinkled skin

[Insufficient Evidence]
Dose: 1 L green tea beverage PO qd; Alt: 300 mg green tea extract PO bid plus 10% green tea cream topically qd