Skip to main content

Herbal Extract

Oregon Ganoderma

Also known as: Ganoderma oregonense, Oregon Reishi, Pacific Ganoderma

D
Evidence

Oregon Ganoderma is a regionally specific polypore mushroom with traditional use for immune and stress support. Scientific research on this species is extremely limited compared to Asian Ganoderma lucidum.

Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.

Find the best Oregon Ganoderma supplements — free
See Oregon Ganoderma products scored on dose & form, then track your intake in the app.
Open app →

Primary uses

  • Immune system support
  • Stress and relaxation
  • General wellness

How it works

  • β-glucans and polysaccharides (presumed, not well-studied for this species)
  • Triterpenes with potential bioactive properties
  • Traditional adaptogenic use pattern

Dosage

Typical range
1,000-2,000 mg daily
Timing
With meals
With food
Recommended
Duration
Traditional use patterns suggest 8+ weeks; optimal duration unknown for this species
Special populations
Safety in pregnancy/nursing unknown; not recommended without practitioner oversight

Forms

  • Mycelium on rice biomass· 70/100
  • Capsules· 70/100

Safety

Common side effects

  • Unknown—minimal safety data exists for this species

Contraindications

  • Mushroom allergies
  • Immunosuppression (consult practitioner)
  • Pregnancy/nursing (insufficient safety data)

Evidence notes

Minimal human research. Species-specific data virtually absent. Extrapolation from related Ganoderma species is problematic due to potentially different phytochemical profiles. Mycelium form on rice biomass largely unstudied.

Grade D: Primarily pre-clinical or anecdotal; human efficacy not established.

Related in Herbal Extract

Check a full stack

Formulate's free interaction checker lets you paste in any combination of supplements and medications at once — every pairing flags severity, timing, and cited evidence.

Open the checker

Where does Oregon Ganoderma fit in your stack?

Answer two questions and get a stack graded on research — every ingredient scored on the evidence behind it, not the marketing.

Build my stack

2 questions · free · no account needed to start

Also on iPhone — get the free app

📬 Get new guides in your inbox

Evidence-based supplement guides, no spam

We send a short digest when new guides drop — nothing else. No affiliate pushes, no sponsored content, unsubscribe anytime.

Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.