Mushrooms
Turkey tail
Also called: trametes versicolor, PSK, coriolus, yunzhi
A shelf fungus; an extract (PSK) is used with cancer treatment in Japan.
- Why people take it
- Immunity, cancer support.
- What the evidence says
- Some evidence as an add-on to cancer treatment under doctors.
- How it is usually taken
- Usually 1 to 3 g of extract a day; PSK is a prescription form in Japan.
- Be careful
- Talk to your cancer team before using it.
- Medicines it can interact with
- May affect immune-suppressing medicines.
Other mushrooms
Common questions
What is Turkey tail?
A shelf fungus; an extract (PSK) is used with cancer treatment in Japan.
Why do people take Turkey tail?
Immunity, cancer support.
Does Turkey tail work?
Some evidence as an add-on to cancer treatment under doctors.
How much Turkey tail do people take?
Usually 1 to 3 g of extract a day; PSK is a prescription form in Japan.
Is Turkey tail safe?
Talk to your cancer team before using it.
Does Turkey tail interact with medicines?
May affect immune-suppressing medicines.
Sources and further reading
Last reviewed 31 October 2026. Written by Satya Babu.
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