Herb & BotanicalNo.044

Reishi

Immune support, calm, sleep (marketed).

Typical / RDA1–2 g

Upper limitGenerally safe

EvidenceLimited

How to take it

Timing EveningFood OptionalForm Extract

What to know

A traditional "calming" mushroom used for immunity and sleep. Human evidence is limited and mixed. Generally well tolerated short-term.

Interactions & cautions

May mildly thin blood and lower blood pressure.

Do you actually need it?

Traditional use outpaces the clinical evidence.

Questions people ask about reishi

Reishi and Vitamin C: Interaction, Absorption, and SafetyReishi and Vitamin C can generally be taken together. There are no known direct interactions, but be aware of individual cautions for each.

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Reference values: NIH Office of Dietary Supplements, adult general population. Educational information only — not medical advice. Confirm with a healthcare professional.