Calculate cordyceps dose by goal — endurance, energy, immune support. Most commercial cordyceps is C. militaris (cultivated) NOT C. sinensis (wild Tibetan, $1,000+/kg). Cordycepin % is the standardization marker most labels skip. Math, not medical advice.
Your goal + form
3,000 mg/day
Recommended C. militaris extract dose
RCT dose reference
| Trial | Population | Daily dose | Outcome |
|---|---|---|---|
| Chen 2010 (J Altern Complement Med) | Healthy elderly, n=20 | 3 g CS-4 (C. sinensis mycelium) | VO2 max + ventilatory threshold improved vs placebo over 12 wk |
| Hirsch 2017 (J Diet Suppl) | Recreationally active adults, n=28 | 4 g multi-mushroom + 1.3 g C. militaris | Time-to-exhaustion +60s vs placebo at 3 weeks |
| Earnest 2004 (Med Sci Sports Exerc) | Trained cyclists, n=22 | 3 g CS-4 | NULL — no performance benefit at 5 weeks |
| Yi 2004 (Pharmacology) | Older adults, n=110 | 3 g/day | Mood + cognitive markers improved over 8 weeks |
| Smith 2018 (J Int Soc Sports Nutr) | Recreationally active, n=28 | 2.7 g mushroom blend (incl. cordyceps) | VO2 peak + time-to-exhaustion improved over 1-3 wk |
| Animal libido (Huang 2001) | Rodent steroidogenesis | N/A (in vitro) | Mechanistic only; human libido RCTs limited |
C. militaris vs C. sinensis
- C. militaris (cultivated): the species in 99% of commercial cordyceps products. Yellow-orange fruiting body, grown on grain or silkworm pupae substrate. Often HIGHER cordycepin than wild sinensis (3-15 mg/g vs 1-5 mg/g).
- C. sinensis (wild Tibetan): the original “caterpillar fungus.” Grown by parasitizing ghost moth larvae at 4,000+ m elevation. $20,000-50,000/kg retail. Endangered; conservation concern.
- CS-4: a specific mycelium strain DERIVED from C. sinensis but cultivated. The Chen 2010 trial used CS-4. Commercial “sinensis” supplements usually mean CS-4, not wild.
- Cordycepin (3′-deoxyadenosine): the marker bioactive shared by both species. Look for “X% cordycepin” or “X mg cordycepin per serving” on label.
- Adenosine + polysaccharides: additional bioactives present in both species at similar levels.
- For athletic / energy goals, militaris extract delivers same active compounds at 1/100th the price of wild sinensis.
Time to effect
- Athletic performance trials: effect seen at 1-3 weeks (Smith 2018) to 5-12 weeks (Chen 2010).
- Daily energy/cognitive: 6-8 weeks typical for subjective effect reports.
- Immune (beta-glucan mediated): 4-8 weeks for measurable changes in NK cell activity, cytokines.
- NOT an acute pre-workout like caffeine. Take daily over weeks for cumulative effect.
Quality and pricing reality
- “Wild Cordyceps sinensis” at $30/bottle is almost certainly NOT wild sinensis. Real wild sinensis retail is hundreds of dollars per gram. The label is either misleading or it’s CS-4 mycelium.
- Mycelium-on-grain products are mostly leftover grain (~85-95%). Cordycepin content is dramatically lower per gram.
- Premium cultivated militaris (Real Mushrooms, Nootropics Depot) is ~$40-60/month at trial doses. Reasonable for evidence-based use.
- Avoid “cordyceps blend” formulas that don’t disclose cordycepin content. Marketing wins over substance.
Drug interactions and contraindications
- Anticoagulants (warfarin, aspirin): mild antiplatelet activity; monitor with anticoagulants.
- Diabetes meds: cordyceps has glucose-lowering effects in animals; monitor blood sugar.
- Immunosuppressants (cyclosporine, tacrolimus): beta-glucan immune stimulation may interfere. Consult specialist.
- Asthma: rare bronchospasm reports with mushroom supplementation.
- Pregnancy: limited safety data — avoid.
- Surgery: discontinue 1-2 weeks before due to antiplatelet effect.
- Mushroom allergy / asthma: rare cross-reactivity reported.