Pleuran
Pleuran is a beta-1,3/1,6-glucan polysaccharide extracted from oyster mushrooms (Pleurotus ostreatus) that modulates immune function. It activates macrophages and natural killer cells through Dectin-1 receptors, enhancing pathogen recognition and inflammatory response.

Origin & History
Pleuran is a beta-glucan extracted from the mushroom Pleurotus ostreatus, commonly known as the oyster mushroom. This compound is highly valued for its immunomodulatory properties.
Historical & Cultural Context
Pleuran has been used in traditional medicine, particularly in Eastern Europe, for its health-promoting properties. It has gained popularity in Western countries as a dietary supplement.
Health Benefits
- Enhances immune function by stimulating macrophages and natural killer cells, boosting the body's defense against infections. This leads to a more robust immune response. - Reduces inflammation by modulating cytokine production, which alleviates symptoms of chronic inflammatory conditions. This supports joint and tissue health. - Provides antioxidant protection by neutralizing free radicals, which prevents cellular damage and aging. This enhances overall health and longevity. - Supports respiratory health by reducing the severity and duration of respiratory infections. This promotes easier breathing and lung function. - Improves gut health by promoting beneficial gut bacteria growth and enhancing gut barrier function. This supports digestion and nutrient absorption. - Enhances skin health by reducing oxidative stress and inflammation, leading to improved skin appearance and elasticity. This promotes a youthful complexion. - Supports cardiovascular health by improving blood lipid profiles and reducing oxidative stress. This lowers the risk of heart disease and supports vascular health.
How It Works
Pleuran binds to Dectin-1 receptors on immune cells, triggering complement receptor 3 (CR3) activation and downstream signaling cascades. This activation stimulates macrophage phagocytosis and enhances natural killer cell cytotoxicity. The beta-1,3/1,6-glucan structure also modulates NF-κB and MAPK pathways, regulating cytokine production including TNF-α and interleukin-1β.
Scientific Research
Several studies have shown Pleuran's efficacy in boosting immune responses and its potential role in reducing cholesterol. However, more clinical trials are needed to fully understand its effects on human health.
Clinical Summary
Human studies with Pleuran have primarily focused on respiratory infections and immune markers, with doses ranging from 100-400mg daily. A randomized controlled trial of 200 participants showed 30% reduction in upper respiratory tract infection frequency over 12 weeks. Several smaller studies (20-60 participants) demonstrated increased natural killer cell activity and improved cytokine profiles. However, most research consists of short-term studies with limited sample sizes, requiring larger long-term trials for definitive efficacy claims.
Nutritional Profile
- Rich in polysaccharides, primarily beta-glucans. - Contains essential amino acids. - Low in calories and fats. - Provides dietary fiber.
Preparation & Dosage
Typical dosage ranges from 100 to 300 mg per day. Consult a healthcare provider before use.
Synergy & Pairings
Vitamin C, Zinc, Echinacea, Elderberry
Safety & Interactions
Pleuran appears well-tolerated with minimal reported side effects in clinical studies, though some individuals may experience mild gastrointestinal upset or allergic reactions to mushroom compounds. No significant drug interactions have been documented, but theoretical concerns exist with immunosuppressive medications due to immune-stimulating effects. Safety during pregnancy and breastfeeding has not been established through clinical research. Individuals with autoimmune conditions should consult healthcare providers before use due to immune system modulation.