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Supplements/Amino Acid

Ergothioneine (Mushroom-Derived)

Natural ergothioneine from oyster mushrooms.

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Overview

Natural ergothioneine from oyster mushrooms.

Natural sources
  • Dietary protein from animal sources (meat, fish, eggs, dairy) and plant sources (soy, legumes, grains)
  • Free-form amino acid powders and capsules
  • Targeted pre-workout, recovery, or sleep formulations
Common forms
  • Free-form crystalline powder
  • Capsules or tablets
  • Pre-mixed recovery or hydration beverages
  • Time-release formulations

Mechanism of action

Same as synthetic; OCTN1 substrate.

Pathways
  • · Same as synthetic
  • · OCTN1 substrate

Effects on the body

Supports
Antioxidant

Organ system effects

Brain & CNS

Ergothioneine (Mushroom-Derived) acts on hallmarks of aging including oxidative stress, mitochondrial dysfunction, and senescence signaling.

Evidence-based benefits

Antioxidant

Moderate evidence

Potential side effects

Common
  • · Well tolerated
Rare
    Serious

      Drug interactions

      Prescription medications (general)
      Always disclose Ergothioneine (Mushroom-Derived) use to your prescriber — additive, antagonistic, or pharmacokinetic interactions are possible.
      minor

      Supplement interactions

      Pairs well with
      • NAD+ precursor (NMN or NR)
        Complementary mitochondrial and sirtuin support.
      • Omega-3
        Lowers inflammation and supports membrane integrity.
      • Omega-3 (EPA/DHA)
        Membrane fluidity and neuronal signaling support.
      Avoid combining with

      No specific avoidances listed.

      Dosing & bioavailability

      Typical dose
      5 mg
      Best form
      Most evidence is based on the free-form crystalline powder form.
      Timing
      Consistent daily timing recommended; split larger doses if GI tolerance is a concern.
      With food?
      Either with or without food.

      Where to buy

      Affiliate links — we may earn a commission at no extra cost to you. Amazon code supplementsch-20 is auto-applied at checkout. We don't endorse specific brands; verify third-party testing (USP, NSF, Informed Sport) before purchase.

      Scientific evidence8Show studies
      CohortBiochem Biophys Res Commun · 2016

      Ergothioneine and cognitive decline

      Cheah IK, et al.

      Elderly Asian adults

      Key findings

      Low ergothioneine linked to MCI.

      Open study
      Systematic reviewPubMed (NLM) · 1970

      PubMed: Ergothioneine (Mushroom-Derived) — Antioxidant

      Live PubMed search

      Live results for "Ergothioneine (Mushroom-Derived) Antioxidant" across the PubMed/MEDLINE peer-reviewed index.

      Key findings

      Opens current human and preclinical literature matching Ergothioneine (Mushroom-Derived) and "Antioxidant". Filter by RCT, meta-analysis, or year on the results page.

      Open study
      Systematic reviewPubMed (NLM) · 1970

      PubMed: Ergothioneine (Mushroom-Derived) — randomized controlled trial

      Live PubMed search

      Live results for "Ergothioneine (Mushroom-Derived) randomized controlled trial" across the PubMed/MEDLINE peer-reviewed index.

      Key findings

      Opens current human and preclinical literature matching Ergothioneine (Mushroom-Derived) and "randomized controlled trial". Filter by RCT, meta-analysis, or year on the results page.

      Open study
      Systematic reviewPubMed (NLM) · 1970

      PubMed: Ergothioneine (Mushroom-Derived) — meta-analysis

      Live PubMed search

      Live results for "Ergothioneine (Mushroom-Derived) meta-analysis" across the PubMed/MEDLINE peer-reviewed index.

      Key findings

      Opens current human and preclinical literature matching Ergothioneine (Mushroom-Derived) and "meta-analysis". Filter by RCT, meta-analysis, or year on the results page.

      Open study
      Systematic reviewPubMed (NLM) · 1970

      PubMed: Ergothioneine (Mushroom-Derived) — pharmacokinetics

      Live PubMed search

      Live results for "Ergothioneine (Mushroom-Derived) pharmacokinetics" across the PubMed/MEDLINE peer-reviewed index.

      Key findings

      Opens current human and preclinical literature matching Ergothioneine (Mushroom-Derived) and "pharmacokinetics". Filter by RCT, meta-analysis, or year on the results page.

      Open study
      Systematic reviewPubMed (NLM) · 1970

      PubMed: Ergothioneine (Mushroom-Derived) — safety adverse events

      Live PubMed search

      Live results for "Ergothioneine (Mushroom-Derived) safety adverse events" across the PubMed/MEDLINE peer-reviewed index.

      Key findings

      Opens current human and preclinical literature matching Ergothioneine (Mushroom-Derived) and "safety adverse events". Filter by RCT, meta-analysis, or year on the results page.

      Open study
      Systematic reviewPubMed (NLM) · 1970

      PubMed: Ergothioneine (Mushroom-Derived) — dose response

      Live PubMed search

      Live results for "Ergothioneine (Mushroom-Derived) dose response" across the PubMed/MEDLINE peer-reviewed index.

      Key findings

      Opens current human and preclinical literature matching Ergothioneine (Mushroom-Derived) and "dose response". Filter by RCT, meta-analysis, or year on the results page.

      Open study
      Systematic reviewGoogle Scholar · 1970

      Google Scholar: Ergothioneine (Mushroom-Derived) — clinical evidence

      Live Scholar search

      Cross-database citation index for Ergothioneine (Mushroom-Derived) as it relates to "clinical evidence".

      Key findings

      Includes preprints, theses, and journal articles. Useful for tracking citation counts and follow-on work.

      Open study
      Educational use only. This profile is not medical advice. Consult a qualified healthcare professional before starting any supplement, especially if you take prescription medication or have a chronic condition.

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