How does Cordyceps improve energy and stamina?

Cordyceps is believed to increase the production of adenosine triphosphate (ATP), which is essential for delivering energy to muscles and improving oxygen utilization. The active compound cordycepin is structurally similar to adenosine and may enhance aerobic capacity. Evidence Level B suggests these mechanisms support improved exercise performance and reduced fatigue.

Does Cordyceps interact with blood thinners or other medications?

Yes, Cordyceps may interact with anticoagulant and antiplatelet medications, increasing the risk of bleeding or bruising. It may also potentiate the effects of immunosuppressants and diabetes medications, potentially causing blood sugar to drop too low. Individuals taking these medications should consult a healthcare provider before supplementation.

What is the recommended daily dosage for Cordyceps?

The standard adult dosage for Cordyceps militaris fruiting body extract is typically 1000-3000mg per day. Dosage may vary based on the concentration of active compounds like cordycepin. It is generally recommended to take it with food to improve absorption. Users should follow specific product label instructions or consult a medical herbalist for personalized advice.

Is Cordyceps safe to take during pregnancy?

No, Cordyceps is considered unsafe during pregnancy and breastfeeding. There is insufficient reliable safety data to support its use in these populations. Due to its potential effects on hormonal activity and immune function, pregnant or nursing individuals should avoid Cordyceps supplements unless specifically directed by a qualified healthcare professional.

Who should not take Cordyceps supplements?

Individuals with autoimmune conditions should avoid Cordyceps as it may stimulate immune activity and exacerbate symptoms. Those with bleeding disorders or scheduled for surgery should avoid it due to potential anti-platelet effects. People with hormone-sensitive cancers should also use caution. Always consult a physician if you have underlying health conditions.

Cordyceps (Cordyceps militaris)

What is a herb–drug interaction?

A herb–drug interaction happens when a plant or supplement changes how a medication works in your body — making it stronger, weaker, or more likely to cause harm. Herbs contain active compounds that can speed up or slow down the enzymes and transporters your body uses to process drugs.

Why it matters

St. John's Wort can make birth control, antidepressants, and blood thinners less effective.

Garlic can increase bleeding risk with warfarin and other blood thinners (also ginkgo, ginger, and turmeric).

Kava can amplify sedation when taken with anxiety or sleep medications (also valerian).

The risk is highest for older adults, anyone taking several medications, and people with chronic conditions.

Always tell your doctor and pharmacist about every herb and supplement you take — and check below before combining.

Known Drug Interactions (2)

2 Moderate

Drug	Severity	Description
Immunosuppressants	Moderate	Cordyceps has immune-modulating properties that may interfere with immunosuppressive medications.
Anticoagulants (general)	Moderate	Cordyceps may have mild antiplatelet effects that increase bleeding risk with anticoagulant medications.

This list reflects a curated subset of documented interactions and is not exhaustive. The absence of a drug here is not proof that it is safe to combine. Always confirm with a pharmacist or healthcare provider.

PubMed-compiled information sheet

This sheet was compiled from PubMed (NIH) abstracts using AI assistance. Every factual claim is cited to a real PubMed article (see the source list). It has not yet been human-reviewed — confirm with a healthcare provider before use.

Compiled from 30 PubMed articles · model: gemma4:31b

Summary

Cordyceps militaris is an entomopathogenic ascomycete fungus recognized as a medicinal and edible mushroom in East Asia [PMID: 38906495, 34829273]. It is valued for its diverse pharmacological effects, including immunomodulatory and anti-inflammatory activities [PMID: 39199741, 35208860].

Background

Cordyceps militaris (also known as bei-chong-cao) is an insect-pathogenic fungus from the Ascomycota phylum and Clavicipitaceae family [PMID: 38903790]. While wild resources are limited, it has been successfully cultivated on a large scale, including on germinated soybeans [PMID: 31410524, 35291592].

Traditional uses

It has been used in traditional Chinese medicine (TCM) for centuries as a general booster for the nervous system, metabolism, and immunity [PMID: 26853111, 35711557].

Active compounds

Key bioactive compounds include cordycepin (3'-deoxyadenosine), polysaccharides (including 1,3-β-glucan), ergothioneine, γ-aminobutyric acid (GABA), sterols, nucleosides, and cerebrosides [PMID: 38906495, 39199741, 34828915, 26853111]. Recent research also identified five undescribed cyclopeptides (Ustiloxins I-M) [PMID: 38604324].

Mechanism of action

C. militaris fruit body extracts containing 1,3-β-glucan activate myeloid dendritic cells via a Dectin-1-mediated pathway, stimulating the secretion of pro-inflammatory and immunoregulatory cytokines [PMID: 39341081]. Certain cerebrosides inhibit the accumulation of pro-inflammatory iNOS protein and reduce COX-2 protein expression in LPS-stimulated RAW264.7 macrophages [PMID: 26853111].

Clinical evidence

Evidence DExercise Performance

Administration of C. militaris ethyl acetate extract (CMEE) slightly increased grip strength and affected biomarkers related to the ATP generation pathway [PMID: 33312018]

Evidence DPlatelet Aggregation

Ethanol extract of cultured C. militaris (CMEE) exhibited a significant inhibitory effect against ADP and collagen-induced platelet aggregation [PMID: 37970560]

Evidence DTriple-Negative Breast Cancer (In Vitro)

Two isolated cyclopeptides (compounds 4 and 5) demonstrated toxicity with IC50 values of 64.29 μM and 28.89 μM, respectively [PMID: 38604324]

Evidence CInflammation and Immunity

Polysaccharides and extracts exhibit antioxidant, anti-inflammatory, and immunomodulatory effects [PMID: 38224811, 33328984]

Evidence summary

The evidence consists primarily of review articles and in vitro or animal-based studies (Level C and D). There is a lack of high-level clinical trial data (Level A or B) specifically for Cordyceps militaris in the provided abstracts.

PubMed sources

1.PMID: 30151320 (2015) — Cordyceps industry in China. · Mycology
2.PMID: 31410524 (2019) — Advances in research on Cordyceps militaris degeneration. · Applied microbiology and biotechnology
3.PMID: 38604324 (2024) — Five undescribed cyclopeptides from Cordyceps militaris. · Phytochemistry
4.PMID: 38906495 (2024) — Cordyceps militaris: A novel mushroom platform for metabolic engineering. · Biotechnology advances
5.PMID: 24716152 (2013) — A Systematic Review of the Mysterious Caterpillar Fungus Ophiocordyceps sinensis in Dong-ChongXiaCao ( Dōng Chóng Xià Cǎo) and Related Bioactive Ingredients.

Cordyceps

Sources & Citations

Ginseng

Astragalus

Eleuthero

⚠️ Not Recommended During Pregnancy or Nursing

2 Known Drug Interactions — Some May Be Serious

Contraindications

Possible Side Effects

What is a herb–drug interaction?

Known Drug Interactions (2)

Summary

Background

Traditional uses

Active compounds

Mechanism of action

Clinical evidence

Evidence summary

PubMed sources

Government sources

Cordyceps

Sources & Citations

Related Herbs

Ginseng

Astragalus

Eleuthero

⚠️ Not Recommended During Pregnancy or Nursing

2 Known Drug Interactions — Some May Be Serious

Contraindications

Possible Side Effects

What is a herb–drug interaction?

Known Drug Interactions (2)

Summary

Background

Traditional uses

Active compounds

Mechanism of action

Clinical evidence

Evidence summary

PubMed sources

Government sources