Turkey Tail
Trametes versicolor
Rich in polysaccharopeptides PSP and PSK, turkey tail is the most evidence-backed medicinal mushroom for immune support, with approved clinical use in Japan's cancer treatment protocols.
Known Health Benefits
Active Compounds
Polysaccharide-K (PSK/krestin), polysaccharopeptide (PSP), beta-glucans
Potential Side Effects
Mild GI effects; darkened stools; not for autoimmune conditions without guidance
Known Drug Interactions
May interact with immunosuppressants and chemotherapy — consult oncologist
Evidence Classification
Supported by cohort studies, case-control studies, or multiple observational studies with consistent findings.
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