I was diagnosed with CLL 2011. Started decaffeinated mega green tea extract 725mg (std to 98% polyphenols, 45% EGCG) in 2012. It was cleared with my oncologist whom I see every 6 months. She also orders liver function tests which have been normal. Plus I always have LFTs with my internist yearly and they have been normal. At one point in around 2020, I decided to decrease the amount by 1/3. My WBC, usually 11,000-14,000
increased to 18,000 after 3 months on the decreased amount. So I resumed the higher dose. After 3-6 months it was back to 11,000 to 14,000. Monitoring by an oncologist is imperative if trying out this treatment as liver and kidney function can be affected. Be sure the green tea is decaffeinated. Probably can't recommend my green tea source but if the product is entered on the web, it will come up.