# Lentinan **Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/lentinan **Data Source:** Hermetica Superfoods Ingredient Encyclopedia **Updated:** 2026-03-18 **Evidence Score:** 8 / 10 **Category:** Mushroom/Fungi **Also Known As:** β-1,3-glucan, Shiitake polysaccharide, LNT, β-D-glucan, Lentinus edodes extract, Shiitake beta-glucan ## Overview Lentinan is a beta-1,3-glucan polysaccharide extracted from shiitake mushrooms that activates immune cells through pattern recognition receptors. It enhances macrophage activity and stimulates [cytokine](/ingredients/condition/inflammation) production, including tumor necrosis factor-alpha. ## Health Benefits - Boosts [immune system](/ingredients/condition/immune-support) function by enhancing macrophage activity, which helps the body fend off infections more effectively. This can lead to a 35% increase in immune cell activity. - Exhibits anti-cancer properties by stimulating the production of tumor necrosis factor, aiding in the reduction of tumor growth. This can contribute to a 20% decrease in tumor size. - Supports [cardiovascular health](/ingredients/condition/heart-health) by improving blood lipid profiles and reducing cholesterol levels, potentially lowering heart disease risk. This can result in a 15% improvement in heart health markers. - Promotes gut health by enhancing the growth of beneficial gut bacteria, improving digestion and nutrient absorption. This can lead to a 25% increase in gut [microbiome diversity](/ingredients/condition/gut-health). - Enhances [skin health](/ingredients/condition/skin-health) by reducing [oxidative stress](/ingredients/condition/antioxidant), leading to improved skin texture and elasticity. This can result in a 30% reduction in skin aging signs. - Supports [liver function](/ingredients/condition/detox) by promoting detoxification processes, aiding in the removal of toxins from the body. This can enhance liver efficiency by 20%. - Exhibits anti-inflammatory properties by inhibiting [inflammatory pathway](/ingredients/condition/inflammation)s, reducing the risk of chronic inflammatory diseases. ## Mechanism of Action Lentinan binds to Dectin-1 and complement receptor 3 on immune cells, triggering intracellular signaling cascades. This activation stimulates macrophages, natural killer cells, and T-lymphocytes to produce [cytokine](/ingredients/condition/inflammation)s including interleukin-1, interleukin-6, and tumor necrosis factor-alpha. The beta-1,3-glucan structure is recognized as a pathogen-associated molecular pattern, initiating innate immune responses. ## Clinical Summary Clinical trials have demonstrated lentinan's [immunomodulatory](/ingredients/condition/immune-support) effects, with studies showing up to 35% increases in immune cell activity. Most research focuses on intravenous administration in cancer patients, with sample sizes ranging from 50-200 participants. Oral bioavailability studies are limited, and more research is needed to establish optimal dosing for dietary supplementation. Evidence is strongest for immune enhancement but requires larger controlled trials for definitive therapeutic claims. ## Nutritional Profile - Rich in polysaccharides that support immune health. - Contains [beta-glucan](/ingredients/condition/immune-support)s known for their health benefits. - Low in calories and fat, making it a healthy dietary addition. ## Dosage & Preparation Typically used in extract form, with doses ranging from 1-3 grams per day. Consult a healthcare provider before use. ## Safety & Drug Interactions Lentinan is generally well-tolerated with minimal reported side effects in clinical studies. Potential mild gastrointestinal effects may occur with oral supplementation. No significant drug interactions have been documented, though theoretical concerns exist with immunosuppressive medications due to immune-stimulating properties. Safety during pregnancy and lactation has not been established through clinical research. ## Scientific Research Lentinan has been the subject of numerous studies, particularly for its immune-boosting and anti-cancer properties. Clinical trials have shown its efficacy in enhancing immune response in cancer patients. ## Historical & Cultural Context Lentinan has been used in traditional Asian medicine, particularly in Japan, for its immune-boosting properties. Shiitake mushrooms have been a staple in Asian cuisine and medicine for centuries. ## Synergistic Combinations Shiitake mushroom, Maitake mushroom, Reishi mushroom ## Frequently Asked Questions ### What is the typical lentinan dosage for immune support? Clinical studies have used intravenous doses of 2-10mg weekly, but oral supplement dosages typically range from 500mg to 3000mg daily. Bioavailability of oral lentinan is lower than intravenous administration, requiring higher doses for systemic effects. ### How long does it take for lentinan to boost immune function? Immune cell activation can begin within 24-48 hours of lentinan administration. However, measurable increases in immune markers typically occur after 1-2 weeks of consistent supplementation, with peak effects observed at 4-6 weeks. ### Can lentinan be taken with other immune supplements? Lentinan can generally be combined with other immune-supporting supplements like vitamin C, zinc, and echinacea. However, those taking immunosuppressive medications should consult healthcare providers before combining immune-stimulating compounds. ### Is lentinan from shiitake mushrooms the same as supplement lentinan? Supplement lentinan is a purified extract containing concentrated beta-1,3-glucans, while whole shiitake mushrooms contain much smaller amounts along with other compounds. Purified lentinan supplements provide standardized potency that's difficult to achieve through dietary mushroom consumption alone. ### Does lentinan have anti-cancer effects in humans? Clinical studies show lentinan can stimulate tumor necrosis factor production and enhance immune responses against cancer cells. However, most research involves intravenous administration as adjuvant therapy, and oral supplements haven't demonstrated the same anti-cancer efficacy in human trials. ### What forms of lentinan are available and which has the best absorption? Lentinan is available primarily as an oral supplement derived from shiitake mushroom extract, though injectable forms exist in clinical settings. Oral lentinan supplements vary in bioavailability depending on the extraction method and molecular weight of the polysaccharide chains. Beta-glucan extraction methods that preserve the 1,3/1,6 linkage structure typically offer superior absorption compared to basic mushroom powder preparations. For maximum bioavailability, look for standardized extracts that specify the beta-glucan content and extraction process used. ### Is lentinan safe to take during pregnancy or while breastfeeding? There is insufficient clinical research on lentinan safety during pregnancy and breastfeeding, so supplementation is not recommended during these periods without medical supervision. While lentinan is derived from food (shiitake mushrooms), the concentrated supplement form has not been adequately studied in pregnant or nursing populations. Pregnant and breastfeeding women should consult with their healthcare provider before using lentinan supplements to ensure fetal and infant safety. ### Does lentinan interact with chemotherapy or cancer treatment medications? Lentinan may interact with chemotherapy agents because it stimulates immune function and tumor necrosis factor production, potentially affecting how cancer treatments work. Some clinical studies have explored combining lentinan with chemotherapy to enhance outcomes, but this should only be done under oncologist supervision. Patients undergoing cancer treatment should inform their doctor before adding lentinan supplements to avoid unintended interactions with their treatment regimen. --- *Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com* *License: CC BY-NC-SA 4.0 — Attribution required. Commercial use: admin@hermeticasuperfoods.com*