Reishi Mushroom
adaptogens
Reishi (Ganoderma lucidum) is a polypore fungus traditionally used in Asian medicine for over 2,000 years to promote relaxation and immune support. Contains bioactive compounds including polysaccharides, triterpenes, and peptidoglycans that may modulate stress response and sleep quality.
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Benefits
Dosage
Typical Dose
1.5–9 grams daily
Upper Limit
15 grams daily
Timing
Evening or before bed for sleep support; any time for general wellness
Forms & Bioavailability
Fruiting body powder
Moderate; whole mushroom form contains full spectrum of compounds but bioavailability varies
Standardised extract
High; concentrated polysaccharides and triterpenes enhance absorption and potency
Spore powder
Moderate to high; spores have tough cell walls requiring processing for optimal bioavailability
Side Effects
Interactions
Research Summary
Numerous clinical trials support Reishi's anxiolytic and sleep-promoting properties, with systematic reviews indicating modest but consistent benefits for insomnia and anxiety disorders. Immunomodulatory effects are well-documented in vitro, though clinical efficacy in humans remains variable. Quality of extracts and individual response variability warrant cautious interpretation of results.
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The Bottom Line on Reishi Mushroom
Reishi Mushroom is moderately researched with promising but sometimes mixed evidence.It is most commonly used for stress and anxiety reduction and sleep quality improvement. As with any supplement, individual results vary. Start with the lower end of the dosage range and assess for 4-8 weeks before adjusting.
About Our Research
This profile is compiled from peer-reviewed research published on PubMed, the NIH Office of Dietary Supplements, and established nutritional science databases. Dosages reflect clinically-studied amounts from human trials where available. We update profiles as new research emerges. This is not medical advice — consult a healthcare professional before supplementing.
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