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Adaptogen

Ganoderma lucidum Extract (Reishi Fruiting Body)

Also known as: Reishi, Lingzhi, Red Reishi, Ganoderma lucidum fruiting body

B
Evidence

Ganoderma lucidum (reishi) is a medicinal mushroom traditionally used in Asian medicine with modern research suggesting potential benefits for stress resilience, sleep quality, and immune support. The 8:1 extract ratio indicates concentration of active compounds including polysaccharides and triterpenes.

Primary uses

  • Stress and anxiety reduction
  • Sleep quality improvement
  • Immune system support
  • General wellness and adaptogenic support
  • Stress and anxiety support
  • General wellness and adaptogenic effects

How it works

  • Bioactive polysaccharides (β-glucans) may modulate immune function via pattern recognition receptors
  • Triterpenes and peptidoglycans may influence HPA axis and stress response
  • Potential GABAergic activity supporting relaxation
  • Antioxidant and anti-inflammatory effects

Dosage

Typical range
500–2,000 mg daily in divided doses
Timing
Morning and evening; evening dose may support sleep
With food
May be taken with or without food; water extraction has better bioavailability
Duration
Typically requires 2–8 weeks of consistent use for noticeable effects; benefits often increase with longer use
Special populations
Safety in pregnancy and lactation not well established; use caution in immunocompromised individuals taking immunosuppressants

Forms

  • Fruiting body extract (water extraction standard)· 70/100
  • Capsules· 70/100
  • Powder· 70/100
  • Tincture· 70/100
  • Powder extract (8:1 concentration)· 70/100
  • Whole fruiting body dried· 70/100

Safety

Common side effects

  • Mild gastrointestinal upset
  • Dry mouth
  • Dizziness (rare)
  • Mild insomnia if taken in excess

Contraindications

  • Concurrent immunosuppressant therapy (potential interaction)
  • Bleeding disorders or anticoagulant use (theoretical risk, case reports limited)
  • Pregnancy and lactation (insufficient safety data)

Evidence notes

Reishi has moderate human clinical evidence for stress/anxiety and sleep support, with some well-designed RCTs showing benefit. However, studies are often small-scale or from Asian institutions with variable methodology. Fruiting body extracts are generally considered superior to mycelium products.

Grade B: Some human trials support key claims; further confirmation needed.

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider.