There is a small number of clinical trials investigating maitake's effects in cancer therapy. In one study, results suggested that quality of life indicators had improved, including cancer symptoms (ex, nausea, hair loss) and pain reduction. Previous cancers not identified that were improved by maitake in clinical cases include liver, lung, breast, brain, and prostate. 400 mg. - Dr. Chi says this formula should be taken by all patients that have cancer. Dose: 2 or 3 caps twice daily.