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Shiitake Mushroom

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Shiitake is an edible mushroom rich in bioactive compounds including polysaccharides, beta-glucans, and lentinan. It has been used in traditional medicine for centuries and is studied for immune support and potential anti-inflammatory properties.

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Benefits

Immune system support through beta-glucan content
Anti-inflammatory and antioxidant properties
May support cardiovascular health
Contains ergothioneine, a natural antioxidant
Potential antimicrobial and antiviral activity

Dosage

Typical Dose

5-7.5g dried mushroom or 1,500-3,000mg extract daily

Upper Limit

10g daily

Timing

With meals for enhanced absorption

Forms & Bioavailability

Dried whole mushroom

Moderate (15-30%)

Hot water extract/decoction

High (35-50%)

Standardised extract (polysaccharide)

High (40-60%)

Powder/capsule

Moderate (20-35%)

Side Effects

Generally well-tolerated; rare reports of digestive upset or bloating
Potential photosensitivity reactions in sensitive individuals
May cause shiitake dermatitis (skin irritation) from raw handling

Interactions

May potentiate anticoagulants and antiplatelet medications
Could enhance effects of immunosuppressant drugs
May interact with diabetes medications due to potential blood sugar effects

Research Summary

Multiple studies demonstrate that shiitake polysaccharides and lentinan enhance natural killer cell activity and immune response markers. Research suggests potential benefits for cardiovascular health and inflammatory conditions, though human trials remain limited. Further high-quality clinical trials are needed to establish efficacy for specific health claims.

The Bottom Line on Shiitake Mushroom

Shiitake Mushroom is well-researched with strong evidence supporting its primary benefits.It is most commonly used for immune system support through beta-glucan content and anti-inflammatory and antioxidant properties. As with any supplement, individual results vary. Start with the lower end of the dosage range and assess for 4-8 weeks before adjusting.

About Our Research

This profile is compiled from peer-reviewed research published on PubMed, the NIH Office of Dietary Supplements, and established nutritional science databases. Dosages reflect clinically-studied amounts from human trials where available. We update profiles as new research emerges. This is not medical advice — consult a healthcare professional before supplementing.

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Disclaimer: This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement, especially if you have existing health conditions or take medication.

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