Medicinal Mushroom Therapy in Cancer Care
Beta-glucan-rich medicinal mushrooms — reishi, turkey tail, shiitake, and lion's mane — are prescribed in integrative oncology to support immune function, reduce cancer-related fatigue, and improve quality of life during and after conventional cancer treatment.
What Is Medicinal Mushroom Therapy?
Medicinal mushroom therapy uses standardised extracts of specific fungal species — primarily reishi (Ganoderma lucidum), turkey tail (Trametes versicolor), shiitake (Lentinula edodes), and lion's mane (Hericium erinaceus) — to support immune function and improve quality of life in cancer patients. These are prescribed as pharmaceutical-grade extracts, not culinary mushrooms.
The primary active compounds are beta-glucans — complex polysaccharides that bind to pattern recognition receptors on immune cells (particularly macrophages, dendritic cells, and natural killer cells), stimulating innate immune responses. The most studied compounds are PSK (polysaccharide-K, from turkey tail) and lentinan (from shiitake), both of which are licensed as adjunct cancer therapies in Japan.
Medicinal mushrooms are not a cancer treatment. They do not replace chemotherapy, radiotherapy, or surgery. Their role is to support the immune system during and after conventional treatment, reduce treatment-related fatigue, and improve overall wellbeing. Dr Kloppenburg prescribes them as part of a comprehensive integrative oncology care plan.
The quality of medicinal mushroom products varies enormously. Many over-the-counter supplements contain mycelium grown on grain (not the fruiting body), with low beta-glucan content and high starch contamination. Dr Kloppenburg prescribes pharmaceutical-grade extracts with verified beta-glucan content and third-party testing.
Safety and Drug Interactions
Medicinal mushrooms are generally well tolerated. The most common adverse effects are mild gastrointestinal symptoms (nausea, loose stools) at high doses. Reishi may affect platelet aggregation and should be used with caution in patients on anticoagulants. Some species may interact with immunosuppressant medications.
For patients on immunotherapy (checkpoint inhibitors), the interaction between medicinal mushrooms and immune checkpoint blockade is not well characterised. Dr Kloppenburg does not prescribe immune-stimulating mushroom extracts to patients on checkpoint inhibitors without direct communication with the treating oncologist.
Not all medicinal mushroom products are equivalent. Product quality, species identity, beta-glucan content, and manufacturing standards vary widely. Dr Kloppenburg only prescribes verified pharmaceutical-grade extracts.
Key Medicinal Mushroom Species Used in Integrative Oncology
Each species has a distinct active compound profile, evidence base, and clinical application. Dr Kloppenburg selects the appropriate species and extract for each patient based on their cancer type, treatment phase, and clinical goals.
| Species | Active Compounds | Evidence Level | Clinical Uses |
|---|---|---|---|
| Turkey Tail Trametes versicolor | PSK (Krestin), PSP | Strongest — RCTs in Japan; licensed adjunct in Japan | Immune support during chemotherapy; post-treatment immune recovery |
| Reishi Ganoderma lucidum | Beta-glucans, triterpenes | Phase I/II trials; immune modulation and quality of life | Fatigue, immune support, anxiety, sleep quality |
| Shiitake Lentinula edodes | Lentinan (beta-1,3-glucan) | RCT evidence; lentinan licensed in Japan | Immune support; adjunct to chemotherapy |
| Lion's Mane Hericium erinaceus | Hericenones, erinacines | Emerging — cognitive function and neuroprotection | Cognitive function ('chemo brain'), neuroprotection, mood |
Frequently asked questions
Questions About Medicinal Mushroom Therapy
What are medicinal mushrooms and how are they used in cancer care?
Medicinal mushrooms are fungi with documented immunomodulatory properties, used in integrative oncology to support immune function during and after conventional cancer treatment. Key species include reishi (Ganoderma lucidum), turkey tail (Trametes versicolor), shiitake (Lentinula edodes), and lion's mane (Hericium erinaceus). They are prescribed as standardised extracts — not culinary mushrooms — and are used alongside, not instead of, conventional treatment.
What is the evidence for medicinal mushrooms in cancer care?
The strongest evidence is for turkey tail (Trametes versicolor), whose polysaccharide extracts PSK and PSP have been studied in randomised controlled trials in Japan and China. PSK is licensed as an adjunct cancer therapy in Japan. Reishi and shiitake have evidence from Phase I/II trials for immune modulation and quality of life. The Society for Integrative Oncology (SIO) includes medicinal mushrooms in its clinical practice guidelines.
Can medicinal mushrooms be taken during chemotherapy?
Most medicinal mushroom extracts are compatible with standard chemotherapy regimens. However, some species may affect drug metabolism via cytochrome P450 enzymes. Dr Kloppenburg reviews your full oncology protocol and medication list before prescribing. She does not prescribe mushroom extracts without a drug-interaction review.
Are medicinal mushrooms the same as magic mushrooms?
No. Medicinal mushrooms are entirely different species from psilocybin-containing fungi. They contain no psychoactive compounds. The therapeutic species used in integrative oncology — reishi, turkey tail, shiitake, lion's mane — are food-grade fungi whose immunomodulatory properties have been studied in clinical trials.
How do I access medicinal mushroom therapy through Dr Kloppenburg?
Book a 60-minute remote consultation by calling 07575 424024 or completing the online request form. Dr Kloppenburg will review your medical history, current treatment, and blood results before prescribing. You will receive a written care plan specifying the appropriate species, extract standardisation, dose, and timing.
Discuss Medicinal Mushroom Therapy with Dr Kloppenburg
Book a 60-minute remote consultation to discuss whether medicinal mushroom therapy is appropriate for your situation. Dr Kloppenburg will select the appropriate species and pharmaceutical-grade extract for your care plan.
Remote consultations · UK-wide · 60 minutes · Book via call or online request