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The Functional Food Mushroom
King Oyster is the richest known natural source of ergothioneine — the 'longevity vitamin' — an exceptionally stable antioxidant that accumulates in tissues under oxidative stress, including the heart, liver, and brain.
Family
Pleurotaceae
Origin
Mediterranean, Middle East, Central Asia; widely cultivated globally
Primary Benefit
Cardiovascular & Antioxidant Health
Pleurotus eryngii, the King Oyster mushroom, is the largest and most commercially significant of the oyster mushroom family. While celebrated globally as a culinary delicacy, its medicinal profile is equally impressive. It is the richest known natural source of ergothioneine, a unique amino acid antioxidant that has been dubbed the 'longevity vitamin' by researchers. Ergothioneine is actively transported into cells and accumulates specifically in tissues under oxidative stress — the heart, liver, kidneys, and brain — where it provides targeted protection. King Oyster also contains lovastatin, a naturally occurring statin compound associated with healthy cholesterol metabolism, and pleuran, a beta-glucan with potent immune-modulating activity.
Rich in Ergothioneine (Master Antioxidant)
Contains the highest ergothioneine levels of any food source. This unique antioxidant is actively transported to tissues under oxidative stress, providing targeted cellular protection.
Supports Healthy Cholesterol Levels
Naturally occurring lovastatin and mevinolin inhibit HMG-CoA reductase, supporting healthy LDL cholesterol metabolism.
Cardiovascular Health Promotion
Combined action of ergothioneine, lovastatin, and pleuran supports vascular health, reduces oxidative stress in the cardiovascular system, and promotes healthy endothelial function.
Immune Modulation via Pleuran
Pleuran activates macrophages and NK cells, supporting innate immune defense and respiratory health.
Prebiotic Gut Health Support
Pleuran and other polysaccharides act as prebiotics, supporting beneficial gut microbiota and intestinal barrier integrity.
Get a free King Oyster extract sample for your formulation trials. B2B clients only.
Extraction Method
Hot water extraction to maximize ergothioneine, pleuran, and polysaccharide yield.
Standardization
Standardized to ≥20% polysaccharides with verified ergothioneine content by HPLC.
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