Agaricus blazei
Agaricus subrufescens (Agaricus blazei Murrill) · Agaricaceae
Reviewed by The Sarv Health Team · Updated June 29, 2026 · Our editorial process
Agaricus blazei is a medicinal mushroom native to Brazil and now cultivated worldwide, prized for one of the highest beta-glucan contents of any fungus. Traditionally consumed in the mountainous Piedade region of Brazil, where it was linked to unusually low rates of chronic disease, it became a staple of Japanese immune therapy. Its polysaccharides and beta-glucans strongly activate and balance the immune system, stimulating natural killer cells and macrophages, which is why it is used as a supportive agent alongside conventional cancer care. Agaricus blazei also helps regulate blood sugar and supports healthy insulin response, making it of interest for metabolic health and diabetes. With notable antioxidant and anti-inflammatory properties, it protects cells from oxidative stress and supports liver health. Nutty and almond-scented, it is valued as a broad immune and metabolic tonic.
Medicinal Uses
Agaricus blazei is a sun-loving medicinal mushroom that originated in the highlands of Brazil and was later popularized in Japan, where it became one of the most widely used immune mushrooms in complementary medicine. Its therapeutic strength comes from an exceptionally high content of beta-glucans and other immune-active polysaccharides.
The primary medicinal use of Agaricus blazei is immune activation and modulation. Its polysaccharides stimulate key immune cells such as natural killer cells, macrophages, and dendritic cells, helping the body recognize and respond to pathogens and abnormal cells. For this reason it is widely used in Japan and elsewhere as a supportive therapy during and after cancer treatment, and to bolster immunity in those who are run down or recovering from illness.
Agaricus blazei is also valued for its metabolic benefits. Research and traditional use suggest it helps regulate blood sugar levels and improve insulin sensitivity, making it a useful supportive food for those managing type 2 diabetes and metabolic imbalance.
In addition, the mushroom offers antioxidant and anti-inflammatory effects. Its compounds help neutralize free radicals, reduce oxidative stress, and calm inflammation throughout the body, which supports cardiovascular and liver health.
Well tolerated and nutrient-dense, Agaricus blazei is regarded as a broad tonic for immune resilience, healthy metabolism, and protection against the cellular damage associated with aging.
Benefits
Activates and balances the immune system, stimulates natural killer cells and macrophages, supports the body during cancer treatment, helps regulate blood sugar, improves insulin sensitivity, reduces inflammation, provides antioxidant protection, supports liver and cardiovascular health, aids recovery from illness
How to Use & Dosage
1/2 to 1 teaspoon (1-3 grams) of mushroom powder, taken 1-2 times daily in food or drinks.
1000-3000 mg per day, divided into 1-2 doses.
2-4 ml (about 40-80 drops), taken 2-3 times daily.
Simmer 3-9 grams of dried Agaricus blazei in water for 30-60 minutes. Drink 1-2 cups daily.
More Info
Frequently asked questions
What is Agaricus blazei used for?
Agaricus blazei is a sun-loving medicinal mushroom that originated in the highlands of Brazil and was later popularized in Japan, where it became one of the most widely used immune mushrooms in complementary medicine. Its therapeutic strength comes from an exceptionally high content of beta-glucans and other immune-active polysaccharides. The primary medicinal use of Agaricus blazei is immune activation and modulation.
What are the benefits of Agaricus blazei?
Activates and balances the immune system, stimulates natural killer cells and macrophages, supports the body during cancer treatment, helps regulate blood sugar, improves insulin sensitivity, reduces inflammation, provides antioxidant protection, supports liver and cardiovascular health, aids recovery from illness
How do you take Agaricus blazei?
Common preparations include powder, capsules, tincture, decoction. See the dosage guidance above, and consult a qualified practitioner for amounts suited to you.
This information is for general wellness and educational purposes only and is not medical advice. Consult a qualified healthcare provider before using any herb — especially if you are pregnant, nursing, or taking medication.
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