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Turkey Tail: Coriolus Super Strength 500 mg 90 caps
Turkey Tail: Coriolus Super Strength 500 mg 90 caps Quantity in Basket: None
Code: JHS-CSS90

Price: $0.00

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Turkey Tail:
Coriolus Super Strength - PSK Formula
Immune Support* 
Dosage: 500 mg
Size: 90 Capsules
Category: Mushroom Science
Product Number: JHS-CSS90
Product Code: JHS-CSS90

Hot water extracts of Coriolus versicolor, a.k.a. Trametes versicolor, Turkey Tail or PSK, are one of the most effective and best selling immune support supplements in the world, and the most widely used immune support supplement in Japan.*

The immune health benefits have been verified in hundreds of studies and multiple human clinical trials, making Coriolus versicolor (Turkey Tail) one of the most thoroughly researched medicinal mushrooms used for immune support.*

Coriolus versicolor is known as Yun zhi in China and Kawaratake in Japan. In the U.S. it is also known as the Turkey Tail mushroom and by the scientific name Trametes versicolor. Coriolus versicolor is probably the most common shelf fungus in the world.

The NIH is currently funding a seven year study on Coriolus versicolor at Bastyr University in Seattle, Washington. This study started out using an unextracted Turkey Tail supplement made by a U.S. based mushroom company for the first eighteen months, but dropped that unextracted supplement from the study in 2010 and replaced it with PSK, a hot water extract of Coriolus versicolor made in Japan.

Only three women were tested in the first stage of this NIH study, and two of the three women tested showed no effect on immune health when taking the unextracted supplement.

One of the three woman tested showed a slight movement in NK cell activity when taking 6 grams of the unextracted powder twice a day (a massive dose for any kind of supplement). But this was nothing close to the over all benefit for immune health that the researchers were expecting so, as mentioned, they dropped the unextracted Turkey Tail supplement from the NIH study and replaced it with a hot water extract, the effective form of the supplement sold by MushroomScience.*

This was to be expected. The researchers used data from studies on hot water extracts to get the NIH grant money to begin with. It was surprising the researchers chose to study unextracted mushroom powder at all. There is no data on unextracted mushroom or mycelium powder in the scientific literature and unextracted medicinal mushrooms have never been used in traditional herbal practice.

Mushroom Science's Coriolus Super Strength formula is carefully prepared with a mutistep hot water extraction process, and delivers the same concentration of immune supporting polyscaccharides as the PSK tested in the highly regarded Japanese research (also known as Krestin or Polysaccharide K).*

Coriolus versicolor extracts have been available for decades in herb shops in the 'China Town' sections of cities, such as San Francisco. A Mushroom Science employee first purchased one of those extracts in 1989, but they were not the same potency as the PSK used in the Japanese research.

Starting in 1994, Mushroom Science was the first company to offer a Coriolus extract that matched the potency of the PSK used in the Japanese research (a.k.a. Krestin). Mushroom Science used the N.M.R. image from the U.S. manufacturing patent for PSK, a molecular finger print, to ensure their exact is the same extract used and sold in Japan under the brand name PSK or Krestin.

Currently, Mushroom Science is still the only company offering a Coriolus versicolor supplement that matches the potency of the PSK used in the Japanese and U.S. research. In other words, you will not find a more potent Coriolus versicolor (Turkey Tail) supplement available for purchase.

There are some companies claiming that PSK and PSP can only be extracted from the mycelium (the vegetative stage) and not from the mushroom (the fruit body), however, this is not true.

In the original U.S. Patent filed on the extraction process for making PSK (that's now expired), the inventors make the following statement; "The term "fungus belonging to the Coriolus genus" used herein is to be understood as referring to the fruit bodies and/or mycelia of the above mentioned species of fungi" (U.S. Patent 4,229,570, Oct. 21, 1980).


Suggested Usage: Adults, take 1-3 capsules, twice daily, on an empty stomach

Other Label Information:  Keep out of reach of children. Do not use if pregnant or breast feeding. Do not use if hypersensitive or allergic to mushrooms. Do not use if safety seal around top of bottle is missing or broken. Store at room temperature with lid tightly closed.

Serving Size: 1 Capsule.
Servings per Container: 90

Amount %DV

Organic Coriolus versicolor mushroom (Trametes versicolor),
hot water extract 40% polysaccharide

500mg *
*Daily Value not established
Other ingredients: Vegetarian Capsules (cellulose), Coriolus versicolor mycelium, myceliated rice.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.