Ingredient directory

Reishi is a woody polypore used for centuries in East Asian herbal traditions and now sold mainly as a hot-water or dual extract of the fruiting body.

Typical: 1,000–1,500 mg

Cordyceps militaris is the cultivated, fruiting-body species that has replaced wild Cordyceps sinensis in most supplements because it grows on grain or liquid substrate at scale and contains measurable cordycepin.

Typical: 1,000–3,000 mg

Turkey tail is a thin, fan-shaped polypore whose protein-bound polysaccharides (PSK and PSP) have been studied for decades in Japan and China as adjuncts in oncology settings.

Typical: 1,000–3,000 mg

Chaga is not a true fruiting body but a sclerotium, a dense black mass that grows on birch trees.

Typical: 500–1,500 mg

Shiitake is the world's second most cultivated edible mushroom and a source of the beta-glucan lentinan, eritadenine, and ergothioneine.

Typical: 1,000–2,000 mg

Maitake is a clustered, edible polypore whose proprietary beta-glucan extract, D-fraction, has been studied in small oncology and immunology trials, including a phase II study in myelodysplastic syndromes.

Typical: 500–2,000 mg