Plant MedicineCordyceps

Cordyceps

Cordyceps militaris

Family: Cordycipitaceae

Also known as: Caterpillar fungus, Dong chong xia cao, Aweto, Yarsagumba

At a glance

Best for: Athletic performance, Energy, Oxygen utilisation, Fatigue, Libido
Parts used: Fruiting body, Mycelium
Common forms: Capsule, Powder, Extract, Tea
Evidence level: Promising
Cautions: Quality varies enormously; Wild Cordyceps sinensis is prohibitively expensive—most products use C. militaris
Cardiovascular
Endocrine
Immune
Respiratory
Capsule
Powder
Extract
Tea
Himalayas
Tibet
China
Nepal

What it is

Cordyceps is a parasitic fungus that infects insects (wild form) or is cultivated on grain or liquid medium (commercial). The key active compound is cordycepin (3'-deoxyadenosine), unique to C. militaris, along with polysaccharides and adenosine. Cordycepin has antiviral, anti-inflammatory, and energy-metabolism effects.

Traditional use

Used in Tibetan and Chinese medicine for over 1,500 years for fatigue, respiratory weakness, libido, and longevity. So rare and expensive it was traditionally reserved for the emperor. Himalayan communities have long used it for altitude sickness and stamina.

What modern research suggests (Promising)

RCTs show improved VO2 max and exercise performance in elderly subjects. Studies in athletes show improved oxygen utilisation and reduced fatigue. Anti-inflammatory and antioxidant effects confirmed. Adaptogenic effects on the HPA axis demonstrated. Some evidence for testosterone support and blood sugar regulation.

How people use it

As a supplement: 1000–3000mg/day of fruiting body extract. For performance: take 1–2 hours before exercise. As a powder: add to coffee, smoothies, or pre-workout drinks. Consistent use for at least 3–6 weeks for adaptogenic effects.

Safety + interactions

Generally well-tolerated. Mild digestive upset in some people. Blood-thinning effects at high doses. May affect blood sugar—monitor if diabetic. Avoid with immunosuppressants. Not studied in pregnancy.

May interact with: Blood thinners, Immunosuppressants, Diabetes medications

Name clarity note

Wild Cordyceps sinensis (the original Himalayan caterpillar fungus, grown on ghost moth larvae) costs $20,000+ per kilogram and is rarely in commercial products. Most products use Cordyceps militaris, which can be cultivated on grain and has similar but not identical compounds. C. militaris contains cordycepin; C. sinensis does not. Check which species your product contains. 'Full spectrum' mycelium on grain products may contain mostly grain starch with little actual Cordyceps.

Quality notes

Look for: Cordyceps militaris fruiting body extract, standardised for cordycepin content. Avoid products that only list 'Cordyceps' without specifying the species or part. Third-party testing for heavy metals is important. Dual-extract (hot water + alcohol) provides both polysaccharides and cordycepin.

Community Insights

Premium members share their experiences and knowledge about this plant.

Disclaimer: This content is educational and not medical advice. Always consult a qualified healthcare provider before using any herbs or supplements, especially if you are pregnant, nursing, taking medications, or have a medical condition.

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