Coriolus versicolor's therapeutic uses

DEFINITION: Fungus used to treat specific health conditions.

PRINCIPAL PROPOSED USE: Cancer treatment support

OTHER PROPOSED USE: Cancer prevention, antiviral, antimicrobial, general wellness, gut health, chronic fatigue syndrome

Overview

Coriolus versicolor, also known as a turkey tail mushroom, is a common tree fungus often seen by hikers as a stiff, rounded, horizontal protuberance from tree trunks, with concentric lines of varying color. In traditional Chinese herbal medicine, this fungus is used to strengthen overall vitality and treat lung and liver problems, as well as other conditions.

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Therapeutic Dosages

A typical dosage of PSK or PSP as an adjunct to standard cancer treatment is 2 to 6 grams daily. For cancer prevention, some experts recommend 500 milligrams daily, but there is no scientific basis for this recommendation.

Therapeutic Uses

Extracts of Coriolus versicolor called polysaccharide-K (PSK) and polysaccharopeptide (PSP) are under study as immune stimulants for use alongside chemotherapy in cancer treatment. These two related substances, made from slightly different strains of the fungus, are thought to act as biological response modifiers, meaning that they affect the body’s response to cancer.

According to most but not all reported trials, most of which were performed in Asia, both PSK and PSP can enhance the effects of various forms of standard cancer treatment. For example, in a twenty-eight-day double-blind, placebo-controlled study of thirty-four people with advanced non-small-cell lung cancer, the use of Coriolus extracts along with conventional treatment significantly slowed the progression of the disease.

Coriolus extracts are thought to work by stimulating the body’s cancer-fighting cells. PSK and PSP may also have cancer-preventive effects. In addition, very weak evidence hints that extracts of Coriolus versicolor might be helpful for human immunodeficiency virus infection.

In addition to its use as an adjuvant cancer treatment, Coriolus versicolor may also help fight infections with its antimicrobial and antiviral properties, boost immunity, protect against free radicals due to its antioxidant properties, promote a healthy gut biome, and manage chronic fatigue syndrome.

Safety Issues

According to Chinese studies, PSP and PSK appear to be relatively nontoxic, in both the short and long term. Few side effects have been reported in clinical trials. However, safety in young children, pregnant or nursing women, and people with severe liver or kidney disease has not been established.

Bibliography

Camilleri, E., Blundell, R., Baral, B. et al. "A Comprehensive Review on the Health Benefits, Phytochemicals, and Enzymatic Constituents for Potential Therapeutic and Industrial Applications of Turkey Tail Mushrooms." Discover Applied Sciences, vol. 6, 2024, p. 257, doi.org/10.1007/s42452-024-05936-9. Accessed 17 Sept. 2024.

Chu, K. K., S. S. Ho, and A. H. Chow. "Coriolus versicolor: A Medicinal Mushroom with Promising Immunotherapeutic Values." Journal of Clinical Pharmacology, vol. 42, 2002, pp. 976-984.

"Coriolus Versicolor." Memorial Sloan Cancer Center, 31 May 2022, www.mskcc.org/cancer-care/integrative-medicine/herbs/coriolus-versicolor. Accessed 17 Sept. 2024.

Fisher, M., and L. X. Yang. "Anticancer Effects and Mechanisms of Polysaccharide-K (PSK): Implications of Cancer Immunotherapy." Anticancer Research, vol. 22, 2002, pp. 1737-1754.

Jian, X., et al. "Subchronic Toxicity Test of Polysaccharopeptide of Yun Zhi (PSP)." International Symposium on Traditional Chinese Medicine and Cancer: Development and Clinical Validation–Advances Research in PSP, edited by Q. Y. Yang. Hong Kong: Hong Kong Association for Health Care, 1999.

Jin, T. Y. "Toxicological Research on Yun Zhi Polysaccharopeptide (PSP)." International Symposium on Traditional Chinese Medicine and Cancer: Development and Clinical Validation–Advances Research in PSP, edited by Q. Y. Yang. Hong Kong: Hong Kong Association for Health Care, 1999.

Tsang, K. W., et al. "Coriolus versicolor Polysaccharide Peptide Slows Progression of Advanced Non-Small- Cell Lung Cancer." Respiratory Medicine, vol. 97, 2003, pp. 618-624.