Reishi Mushroom — Stress, Sleep & Immune Support

Reishi Mushroom (Ganoderma lucidum)

Known as the "Mushroom of Immortality" in traditional Chinese medicine, Reishi (Ganoderma lucidum) has been used for over 2,000 years to promote longevity, calm the mind, and support immune function. Modern pharmacological research has validated many of these traditional applications, identifying over 400 bioactive compounds in the fruiting body and spores.†

Biochemical Profile & Mechanism of Action

Reishi's bioactivity comes primarily from two compound classes:

Triterpenoids (ganoderic acids) — Over 150 identified; exhibit anti-inflammatory, hepatoprotective, and anti-histamine activity. They modulate the HPA (hypothalamic-pituitary-adrenal) axis, the body's central stress response system
Polysaccharides (β-glucans) — High-molecular-weight carbohydrates that activate macrophages, dendritic cells, and natural killer (NK) cells, thereby modulating both innate and adaptive immune responses

Reishi is classified as an adaptogen — a substance that helps the body resist physiological and psychological stressors while maintaining homeostasis.†

Research-Supported Benefits

Stress & fatigue: A randomized, double-blind, placebo-controlled study in neurasthenia patients found that Reishi polysaccharide extract significantly reduced fatigue and improved well-being after 8 weeks (Tang et al., 2005).†
Immune modulation: Clinical research demonstrates that Reishi polysaccharides enhance immune cell activity, including increased NK cell cytotoxicity and T-lymphocyte counts in immunocompromised populations (Gao et al., 2003).†
Sleep quality: A study in rats demonstrated that Reishi extract increased total sleep time and non-REM sleep duration, mediated through TNF-α signaling pathways (Cui et al., 2012).†
Antioxidant activity: Ganoderic acids exhibit potent free radical scavenging activity and upregulate endogenous antioxidant enzymes (superoxide dismutase, catalase), protecting against oxidative stress (Wachtel-Galor et al., 2011).†

Why It's in Focus

Reishi complements Lion's Mane by addressing the stress and immune dimensions of cognitive performance. While Lion's Mane builds neural architecture, Reishi calms the HPA axis and supports the immune resilience needed for sustained mental output. Combined with Magnesium Glycinate and L-Theanine, it forms the calming backbone of Focus.†

Scientific References

Tang, W., Gao, Y., Chen, G., Gao, H., Dai, X., Ye, J., Chan, E., Huang, M., & Zhou, S. (2005). A randomized, double-blind and placebo-controlled study of a Ganoderma lucidum polysaccharide extract in neurasthenia. Journal of Medicinal Food, 8(1), 53–58. doi:10.1089/jmf.2005.8.53
Gao, Y., Zhou, S., Jiang, W., Huang, M., & Dai, X. (2003). Effects of Ganopoly (a Ganoderma lucidum polysaccharide extract) on the immune functions in advanced-stage cancer patients. Immunological Investigations, 32(3), 201–215. doi:10.1081/IMM-120022979
Cui, X. Y., Cui, S. Y., Zhang, J., Wang, Z. J., Yu, B., Sheng, Z. F., Zhang, X. Q., & Zhang, Y. H. (2012). Extract of Ganoderma lucidum prolongs sleep time in rats. Journal of Ethnopharmacology, 139(3), 796–800. doi:10.1016/j.jep.2011.12.020
Wachtel-Galor, S., Yuen, J., Buswell, J. A., & Benzie, I. F. F. (2011). Ganoderma lucidum (Lingzhi or Reishi): A medicinal mushroom. In I. F. F. Benzie & S. Wachtel-Galor (Eds.), Herbal Medicine: Biomolecular and Clinical Aspects (2nd ed., Ch. 9). CRC Press/Taylor & Francis. NCBI Bookshelf

† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Let customers speak for us

from 29 reviews

Tasty morning goodness

Been a long time imbiber. Love the switch to monk fruit sweetened vs Axe-K….less sweet and better flavor. On its own, mixed with a little chai, or even in an Americano, Focus is my morning go-to to steer my morning in a productive, engaged direction

Bob Boardman

12/11/2025

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