This document discusses cancer, its characteristics, current cancer treatment approaches, and the potential for using medicinal mushrooms and their compounds as complementary and adjuvant cancer therapies. It provides information on several medicinal mushrooms - Coriolus versicolor, Phellinus linteus, Antrodia camphorata, and their extracted compounds. Studies show combinations of chemotherapy and these mushrooms/compounds can be more effective than chemotherapy alone in treating cancers like lung cancer and liver cancer. The compound Antroquinonol isolated from A. camphorata has been shown to inhibit the growth of various cancer cell types and has a high safety profile.