Ingredient Evidence Review
Reishi fruiting body dual extract
Ganoderma lucidum
Last updated 2026-05-19 · 3 primary citations
Mechanism
Reishi is the most studied calming mushroom in traditional medicine. Two compound families do the work: long-chain sugars (called beta-glucans) help with sleep onset, and bitter compounds (called triterpenes) help quiet the stress-hormone response. You need both extractions to get both effects.
Why we use it
Perimenopausal sleep is hard to fix because two things go wrong: it's hard to fall asleep, and stress hormones run high. Reishi addresses both. It's the mushroom anchor of the PM packet — paired with Magnesium L-threonate (next row) for the sleep-depth side of the equation.
How we dose it
Hericea uses 1,500 mg per serving (per PM packet). The clinical trial range that anchors this dose is 1,000–3,000 mg/day.
1.5 grams of a dual-extracted Reishi mushroom — meaning extracted twice (in hot water and then in alcohol) to pull out two different families of active compounds that handle two different jobs. Most Reishi supplements use only one extraction and only get one half of the medicine.
Quality & sourcing
≥25% beta-glucan; ≥4% ganoderic acids (triterpenes). Dual extract verified.
Fruiting body dual extract (NOT mycelium). Nammex or equivalent COA.
Cautions
- consult physicianMild antiplatelet effect; consult physician if on anticoagulants.
Primary literature
Yao C et al. (2021)
Sci Rep (Nature)Animal model
Reishi extract promoted deeper sleep in mice through a gut-microbiome and serotonin-involved pathway.
Modern mechanism work showing Reishi works through both the gut-brain axis and the brain's serotonin system — both of which shift in perimenopause.
DOI 10.1038/s41598-021-92913-6
Tang W et al. (2005)
Life SciRCT · 132 people · 8 weeks
Standardized Reishi extract reduced fatigue and improved clinician-rated wellbeing more than placebo over 8 weeks in 132 adults with chronic fatigue.
Largest controlled human study of Reishi to date. Chronic-fatigue cohort overlaps with the bone-deep tiredness many perimenopausal women describe.
Wachtel-Galor S et al. (2011)
Herbal Medicine (CRC Press)Comprehensive review
Authoritative academic review of Reishi's chemistry, pharmacology, and clinical use across immune, cardiovascular, and brain endpoints.
If you want one source that covers the whole Reishi evidence base, this is it.