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Maitake Mushroom Extract

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Coriolus Mushroom Extract

A good mushroom for helping to stimulate the immune system, useful for treating chronic fatigue syndrome, herpes and pulmonary disorders. It has been shown to be beneficial in cancer care, as it has liver boosting properties.
Availability: In stock

Free Guide to Medicinal Mushrooms

Click on the link below to download and keep or just read our free guide to Medicinal Mushrooms written by Martin Powell especially for D. Atkinson Herbalist & Clinic:

Medicinal Mushrooms

D. Atkinson Mushroom Extracts

All of our mushroom extracts are produced for us by Martin Powell.  Our products are practitioner strength and are produced to the highest standards

About Martin

Martin is a biochemist and a Chinese herbalist who has worked with mushroom nutrition for over 20 years.  He lectures at the University of Westminster and is the author of Medicinal Mushrooms - a Clinical Guide.

As well as running a clinical practice he continues to research mushrooms health benefits and run seminars on their clinical uses for doctors and health care professionals in the UK and World wide.

Extract from Martin's Guide to Medicinal Mushrooms:


Main active components
Like most mushroom polysaccharide extracts, both PSK and PSP are proteoglycans (polysaccharides with attached protein groups).

Traditional use
Coriolus is used in traditional Chinese medicine to strengthen the immune system, treat lung and urinary tract infections, tumours and liver disorders.

Main Health Benefits

The Coriolus extracts PSP and PSK are routinely used alongside conventional treatment in the Far East, typically at 3g/day,with over 40 randomized controlled trials confirming benefit for a range of cancers, including: stomach cancer, colorectal cancer, lung cancer (NSCLC), oesophageal cancer, nasopharyngeal cancer, breast cancer and cervical/uterine cancer. Reported benefits include increases in 2, 5 and 15 year survival, as well as reduced side-effects from conventional treatment(1)(3).

Coriolus’ ability to support healthy immune function means that it is also an excellent supplement for chronic viral conditions4, including:

Coriolus has been shown to inactivate Herpes Simplex Virus (HSV) in a dosedependent manner and clinically is seen to reduce the frequency of HSV outbreaks.

In-vitro studies show anti-HIV activity of Coriolus extracts and clinical reports
indicate improvement in HIV patients’ immune status from Coriolus mycelial
biomass supplementation.

Chronic Fatigue Syndrome (CFS/ME)
Many cases of CFS are associated with high viral levels and Coriolus mycelial biomass (1.5-3g/day) has been shown to provide effective support, helping improve quality of life scores, lower viral levels and improve immune parameters, including increased NK cell activity(5).

Coriolus extracts have a pronounced protective effect against lethal infection with Candida albicans in mice(6).

Clinical trials using high concentration extracts, such as PSK and PSP, are mostly at a dose of 3g/day. Research with mycelial biomass products shows benefit at the same supplementation level.

1. The use of mushroom glucans and proteoglycans in cancer treatment. Parris K. Alternative Medicine Rev. 2000:5(1).
2. Coriolus versicolor - Detailed Scientific Review. MD Anderson Cancer Center.
3. Efficacy of Yun Zhi (Coriolus versicolor) on survival in cancer patients: systematic review and meta-analysis. Eliza WL, Fai CK, Chung LP. Recent Pat Inflamm Allergy Drug Discov. 2012 Jan;6(1):78-87.
4. Medicinal value of turkey tail fungus Trametes versicolor (L.:Fr.) Pilát (Aphyllophoromycetideae). A Literature Review. Christopher Hobbs. Int J Med Mushr 2004;6(3).
5. Coriolus. Munroe J. J Integrative Medicine. 2004;8:101-108.
6. Protective effects of a protein-bound polysaccharide, PSK, on Candida albicans infection in mice via tumor necrosis factor-alpha induction. Ohmura Y, Matsunaga K, Motokawa I, Sakurai K, Ando T.Int Immunopharmacol. 2001 Sep;1(9-10):1797-811

The information below is intended for educational use and is not meant to be used to diagnose or treat any medical condition. Anyone who is experiencing any symptoms, has been diagnosed with or suspects they may have a medical condition should contact a medical doctor or appropriately qualified health professional.


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If you are taking any other medication, or have any health issues please check with one of our qualified medical herbalists before using one of our herbal products. Seek advice if pregnant.

Max Dose: Add 1-3g daily to food or drink as part of a balanced diet (one level 5ml teaspoon = 2g)

Coriolus (Trametes versicolor) (50% polysaccharides). Medicinal quality aqueous and ethanolic extract.

UK Shipping and Delivery

Once we have received your order it will be dispatched within three working days. Please note that we do not dispatch orders on Saturdays or Sundays.

Most orders will arrive within 5 working days.

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Special Delivery

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The delivery must be signed for on receipt of your parcel.
International Orders

All orders dispatched to destinations outside the UK are sent by Airmail. Airmail Delivery takes around 5 working days but it can take up to 6 weeks. Due to the nature of International delivery we cannot be held responsible for any damage incurred to your parcel in transit. This includes parcels that may become misplaced en route. Please be aware that parcels may also be delayed for Customs checks.