Shiitake
Also known as: Lentinula edodes, lentinan, shiitake mushroom
Shiitake is the familiar brown culinary mushroom found in most grocery stores — but it also has a long medicinal history. Beyond being food, it's studied for immune support and for a separate effect on cholesterol. Eating it counts; concentrated extracts are used for the supplement-level effects.
What it is
Lentinula edodes contains lentinan, one of the best-characterized mushroom beta-glucans, investigated for decades as an immune-stimulating and anti-tumor agent (used clinically as an injectable adjuvant in parts of Asia).1 Shiitake also contains eritadenine, a distinct compound linked to its cholesterol-lowering effect documented in a human trial, giving shiitake a cardiovascular angle most mushrooms lack.2
Commonly used for
Immune support: lentinan activates immune pathways — T-helper cells, interleukin production, antibody responses — in laboratory and clinical work.1
Typical dosing
As food, culinary amounts contribute beta-glucans and eritadenine. As a supplement, gram-level daily extract doses are common; immune-focused products standardize to lentinan/beta-glucan content.
Route of administration
Oral, as capsules, powders, or extracts; also eaten as a culinary mushroom.
Storage & handling
Store at room temperature, away from heat, light, and moisture.
Common considerations
Raw or undercooked shiitake can occasionally cause "shiitake dermatitis," a self-limiting itchy rash linked to lentinan — cooking prevents it. Generally well tolerated as food and supplement. Discuss use with your provider if you take medication.
References
The information on this page is provided for general educational purposes only. It is not medical advice and is not a substitute for consultation with a qualified healthcare provider. Individual needs, contraindications, and responses to supplementation vary, and decisions about starting, stopping, or modifying any supplement or medication should be made in consultation with a physician, pharmacist, or other appropriate professional. References are provided to authoritative sources; STACK Tracker does not endorse any specific product or brand.