What does science say about Green tea (EGCG) and cancer (all types)?
- We don’t say yes or no. We show what has been studied.
- Working in a lab or in animals does not mean it works in people.
- Don’t stop or change your treatment without talking to your doctor.
What has been studied
- Lab studies (cells)Tests on cells in a dish.Source: PubMed · as of 10 Nov 2026 · Open the search at PubMed629studies
- Animal studiesTests in mice, rats or other animals.Source: PubMed · as of 10 Nov 2026 · Open the search at PubMed446studies
- Studies in peoplePublished studies with human participants.Source: PubMed · as of 10 Nov 2026 · Open the search at PubMed208studies
- Registered trials in peopleTrials entered in a public registry, whatever their result.ClinicalTrials.gov: 8 · as of 10 Nov 2026 · Open the search at ClinicalTrials.govEU CTIS: 0 · as of 10 Nov 2026 · Open the search at EU CTISBy phase:Phase 2 (3)Phase 1/2 (2)Early Phase 1 (1)Phase 3 (1)Phase 1 (1)By status:Recruiting (3)Completed (2)Running, not recruiting (2)Not yet recruiting (1)Countries (6):United States (5)Canada (1)China (1)Colombia (1)Guam (1)Puerto Rico (1)With a linked publication (results): 0 of 8The registries do not tell us here whether results were posted; a linked publication is shown instead.8trials
- Approved treatmentApproved by a medicines regulator for this disease.No
Cancer here means all 33 cancer types we cover.
Examples of what we found
The trials
Phase 1/2
Safety and Efficacy Trial of TV5M01 for Radiation-Induced Mucositis in Head and Neck Cancer Patients.
Not yet recruiting · Colombia
ClinicalTrials.gov · NCT06875791Phase 2
EGCG for Hepatocellular Carcinoma Chemoprevention
Recruiting · United States
ClinicalTrials.gov · NCT06015022Phase 2
To Evaluate if Green Tea Can be Effective in Reducing the Progression of Prostate Cancer in Men on Close Monitoring
Running, not recruiting · Guam, Puerto Rico, United States
ClinicalTrials.gov · NCT04597359Phase 2
Clinical Trial of Green Tea Catechins in Men on Active Surveillance
Running, not recruiting · United States
ClinicalTrials.gov · NCT04300855Early Phase 1
Chemopreventive Effects of Epigallocatechin Gallate (EGCG) in Colorectal Cancer (CRC) Patients
Completed · United States
ClinicalTrials.gov · NCT02891538
Thinking of paying for it? Read this first
- Ask for published results. Stories, thank-you letters and "patients report" are not results. Ask where the results were published.
- Know what you pay for. Ask in writing: what exactly is included, who gets the money, and what happens if you stop.
- Ask your own doctor first. Some products interfere with chemotherapy, radiation or other medicines. Your treating doctor can check this.
- Do not stop standard treatment for it. Do not stop or delay your treatment without talking to your care team.
Not medical advice. Talk to the care team before changing treatment.