Outcome
    Moderate Evidence

    Cordyceps for Enhanced Athletic Performance

    Cordyceps is widely marketed for stamina but human performance data is thin and largely null in trained athletes.

    Overview

    Cordyceps is widely marketed for stamina but human performance data is thin and largely null in trained athletes.

    Verdict

    Insufficient evidence

    How It Works

    Proposed effects include increased ATP production, improved oxygen utilisation and adenosine-related vasodilation.

    Dosing & Protocol

    Typical dose

    Recommended dose
    No dose established; 1-4 g/day studied with inconsistent results
    Expected timeframe
    Not established; any tested effect required at least 3 weeks of daily dosing

    Protocol

    dose
    1-4 g/day studied; the mushroom-blend trial that showed a VO2 signal used 4 g/day for 3 weeks
    form
    Cordyceps militaris fruiting body extract or CS-4 mycelium
    steps
    The evidence here is insufficient. Trials at 1-4 g/day are small, short, and frequently used multi-mushroom blends rather than cordyceps alone — so any signal cannot be attributed to cordyceps.,The most-cited positive study gave 4 g/day of a blend for 3 weeks and found a modest VO2 max change only after 3 weeks, with no effect at 1 week. Several other trials found nothing.,Product identity is a real problem: CS-4 mycelium grown on grain differs chemically from Cordyceps militaris fruiting body, and cordycepin content varies enormously between products.,For performance, the supplements with strong evidence are creatine, caffeine and beta-alanine. Start there.,If you still want to trial cordyceps, 3-4 g/day of a fruiting-body extract for at least 3 weeks is the studied approach — expect little.
    timing
    Not established
    duration
    Not established

    Evidence

    What the studies say

    Small trials in older sedentary adults reported modest VO2max or ventilatory threshold improvements, while studies in trained cyclists found no performance benefit. Product identity and cultivation method vary widely.

    Effect of Cs-4 (Cordyceps sinensis) on exercise performance in healthy older subjects: a double-blind, placebo-controlled trial

    Score: 5/10
    2010n=20

    Chen S, Li Z, Krochmal R +3 more

    In 20 healthy adults aged 50-75, Cs-4 (Cordyceps sinensis mycelium) 333 mg three times daily for 12 weeks raised the metabolic and ventilatory thresholds relative to placebo, while peak VO2 and peak workload did not differ significantly between groups.

    View source

    Safety

    Caveats

    Product mislabelling and heavy metal contamination are documented concerns — use third-party tested products. Avoid in autoimmune disease, in transplant recipients, and with immunosuppressant drugs. May have mild antiplatelet activity: caution with anticoagulants and before surgery. Not studied in pregnancy or breastfeeding. Drug-tested athletes should use batch-certified products.

    Less likely to help if

    Trained athletes, anyone taking it acutely rather than for weeks, and users of mislabelled low-potency products.

    Medical Disclaimer

    The information provided on this website is for educational and informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or before starting any supplement regimen.

    Individual results may vary. The statements on this website have not been evaluated by the Food and Drug Administration. Products and information are not intended to diagnose, treat, cure, or prevent any disease.