Phellinus Linteus

Phellinus linteus, commonly known as Mesima, is a hard, wood-like medicinal mushroom used predominantly in Traditional Chinese, Japanese, and Korean medicine. It is valued for its powerful anti-cancer, immune-modulating, and antioxidant effects. Though inedible due to its tough consistency, it is often consumed in the form of teas, extracts, and capsules for health support.

History

Mesima has a long-standing role in East Asian herbal traditions, often prescribed to support liver function, enhance immunity, and reduce tumor growth. Historical texts describe its use in managing conditions such as gastrointestinal issues, chronic fatigue, and various inflammatory diseases.

In modern times, it has gained recognition in integrative medicine and oncology for its ability to boost natural killer (NK) cell activity and enhance the effects of chemotherapy, particularly in breast, lung, and prostate cancers.

Overview

P. linteus forms a hard, hoof-shaped, orange to dark brown bracket on the trunks of hardwood trees, especially mulberry. The fruiting body has concentric rings and a velvety to crusty surface. It grows slowly and is harvested for its dense concentration of bioactive compounds.

Key constituents include polysaccharides (especially β-glucans), phenolic compounds, and hispidin, which contribute to its antitumor, anti-inflammatory, and antiviral effects. While not a culinary mushroom, it is highly regarded in functional medicine as a potent health tonic.