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Evidence-Based Supplement Research
Evidence-Based Supplement Research

Reishi

Safety profile

4 studies reporting safety data

Across 4 clinical studies, no specific adverse events were quantitatively reported as increased risk compared to control. One study found no significant difference in renal function parameters between Reishi and placebo and Reishi. The remaining tolerability mentions from 7 reports described Reishi as generally well tolerated, with isolated minor events such as nausea, insomnia, gastrointestinal reactions, and a decrease in platelet cell count in some cases. The overall evidence base is limited by poor reporting quality and small study sizes.

Caveats: Evidence is based on a small number of studies (4) with limited safety reporting; most studies were not primarily designed to assess safety, so rare or long-term adverse events may not be captured. Formulations and dosages of Reishi vary across trials, which may affect generalizability.

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    4.7 (195 reviews)
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    By Real Mushrooms

    4.8 (503 reviews)
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    $34.95
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    By New Chapter

    4.7 (98 reviews)
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