When you buy through our links, we earn a small commission — and that is what funds all the free education here. It never costs you more. Products are not intended to diagnose, treat, cure, or prevent any disease.
What it is
A standardized extract of Cordyceps sinensis (the Cs-4 fermented strain), a mushroom adaptogen used for centuries to support stamina and the body's capacity to meet physical demand. It is standardized by HPLC to guaranteed levels of adenosine and polysaccharides for a consistent dose, and it is stimulant-free — its energy support comes from metabolic mechanisms rather than caffeine-style stimulation.
Why the evidence supports it
Cordyceps pairs a long traditional track record with a real, if mixed, modern research base. Randomized, placebo-controlled trials in healthy older adults found Cs-4 raised the ventilatory (metabolic) threshold by around 10 percent during exercise, while an honest null trial in already well-trained cyclists showed no added endurance benefit — a fair picture of who tends to respond. Lab work points to a plausible mechanism: cordycepin activates AMPK, a master metabolic-adaptation enzyme. That lands in the cell's Adapt function — how cells and mitochondria adjust their energy output to the load you put on them. Standardization keeps the dose consistent, though this is still an emerging, non-stimulant support rather than a settled one.
What it supports
- Supports steady, non-jittery everyday energy
- Supports healthy stamina and exercise capacity
- Supports the body's ability to adapt to physical demand
- Supports healthy mitochondrial energy production
Which function it supports
Ties to the cell's Adapt function — supporting how cells and mitochondria adjust their energy output to meet the demand you put on them.
Learn the why behind this pillarHow it relates to your cells and mind
Every product here ties back to a specific job your body does. This one touches the functions below — follow either link to see the mechanism in full, then dig into the studies.
What it is made of — and the mechanisms behind it
Each ingredient acts on several of the body's functions. Taken together, this product touches these cell and mind functions — follow any to see the mechanism in full.
The ingredients
Mechanisms drawn from our ingredient knowledge base (1 profiled ingredients). Structure and function only — not a treatment claim.
The science on the ingredients
Randomized double-blind placebo-controlled clinical trial and assessment of fermentation product of Cordyceps sinensis (Cs-4) in enhancing aerobic capacity and respiratory function of the healthy elderly volunteersRandomized controlled trial2004
A randomized, double-blind, placebo-controlled trial in healthy elderly adults found that six weeks of a fermented Cordyceps sinensis preparation was associated with increased VO2max and anaerobic threshold compared with placebo.
Study authors — Chinese Journal of Integrative Medicine
An authentic assessment method for cordyceps sinensis.2024
Researchers developed a gas chromatography method to authenticate genuine Cordyceps sinensis fungus samples by their chemical profile, comparing seven authentic and seven other samples to distinguish real product from counterfeits.
Duan D; Long C; Zhang H — Journal of pharmaceutical and biomedical analysis
The scientific rediscovery of an ancient Chinese herbal medicine: Cordyceps sinensis: part I.1998
A 1998 review of research on the traditional Chinese fungus Cordyceps sinensis, drawing on studies and clinical trials involving over 2,000 patients, reported activity in free-radical scavenging, lipid-lowering and other physiological systems, with safety data covered separately.
Zhu JS; Halpern GM; Jones K — Journal of alternative and complementary medicine (New York, N.Y.)
The scientific rediscovery of a precious ancient Chinese herbal regimen: Cordyceps sinensis: part II.1998
A review of preclinical and clinical studies on the fungus Cordyceps sinensis reported effects on respiratory, kidney, liver, heart, immune and nervous system measures across animal and human trials, summarizing existing research rather than new data.
Zhu JS; Halpern GM; Jones K — Journal of alternative and complementary medicine (New York, N.Y.)
[Influence of Cordyceps sinensis (Berk.) Sacc. and rat serum containing same medicine on IL-1, IFN and TNF produced by rat Kupffer cells].1996
In cultured rat liver immune cells called Kupffer cells, exposure to the fungus Cordyceps sinensis or blood serum from rats fed the fungus increased production of interleukin-1 and interferon compared with untreated cells.
Liu P; Zhu J; Huang Y; Liu C — Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica
Liu P, et al. Influence of Cordyceps sinensis (Berk.) Sacc. And rat serum containing Sama medicine on IL-1, IFN, and TNF produced by rat Kupffer cells. China J of Chinese Materia Medica 1996; 21(6):367 -- 369 (English Abstract, p. 384). Lou, et al. C1996
Chen S, Jin S.Review of studies on host of Cordyceps sinensis in China. SHIZHEN Research of Chinese Materia Medica 1992;3(1):37 -- 39. Dinghua Y,Tang X. Research progress of cultivation of Cordyceps sinensis. China J of Chinese Materia Medica 1995.1995
Yue D, et al. Cordyceps sinensis, Chapter 4. In an advanced study for Traditional Chinese Herbal Medicine 1995;1;91 -- 113.1995
Comments on nomenclature in traditional Chinese medicine.1992
An opinion article on terminology argued that traditional Chinese medicine is the more accurate term than Chinese medicine or Oriental medicine, and distinguished herbal folk medicine from formal Chinese materia medica, without presenting new research data.
Bao K — The American journal of Chinese medicine
Fei X.Artificially cultured mycelia of Cordyceps sinensis in medical use in China. China J of Chinese Materia Medica 1992;27(4):195 -- 198.1992
China J of Chinese Materia Medica 1992; 17(6):364 -- 366.1992
Huang Q, et al.Weak polar chemical components in Cordyceps. China J of Chinese Materia Medica 1991;14(11):33 -- 34.1991
Wan F, et al. Sex hormone-like effects of Jin Shui Bao. Chinese Traditional Patent Medicine 1988;9:29 -- 31.1988
Guo Y. Pharmaceutical chemistry, pharmacology, and clinical effects of Cordyceps fungus and its preparation Jin Shui Bao. J of Modern Diagnostics and Therapeutics 1986;1:60 -- 65.1986
DIRECTIONS FOR USE Take 2 capsules 2 to 3 times daily with food and drink. WARNINGS Keep out of reach of children. If you are pregnant or lactating, or taking a prescription medication, consult a physician before using this product. Discontinue 2 w
Cordyceps Sinensis (CordyMax Cs-4) supplementation does not improve endurance exercise performanceRandomized controlled trial2004
A randomized, placebo-controlled trial in trained cyclists found that five weeks of Cordyceps sinensis supplementation did not significantly improve aerobic capacity or endurance performance, an honest null finding in already well-trained athletes.
Study authors — International Journal of Sport Nutrition and Exercise Metabolism
Cordyceps militaris improves tolerance to high intensity exercise after acute and chronic supplementation.Clinical trial
placebo. PMC5236007.
Cordycepin activates AMP-activated protein kinase (AMPK) via interaction with the gamma1 subunitEmerging2014
Cordycepin, a bioactive compound in Cordyceps, directly bound and activated AMPK, a master metabolic-adaptation enzyme that reprograms energy-related gene activity.
Wu C, Guo Y, Su Y, et al. — Journal of Cellular and Molecular Medicine
The scientific rediscovery of a precious ancient Chinese herbal regimen: Cordyceps sinensis: Part IILineage1998
This review continues coverage of Cordyceps sinensis research, covering respiratory, renal, hepatic, cardiovascular, immune, and nervous-system mechanisms across preclinical and clinical studies.
Zhu JS, Halpern GM, Jones K — J Altern Complement Med
Nature's marvel: unravelling the multiphase composition of Cordyceps militaris mushroom and its implications as a dietary supplement.2026
A review characterizes the multiphase chemical composition of Cordyceps militaris mushroom, examining its profile as a dietary supplement ingredient.
Parthasarathy S; Tharumasivam SV; Aly SH; Giridharan B; Durairaj S; Elbadry AMM; El-Shazly M — Journal of food science and technology
Cordyceps sinensis Increases Hypoxia Tolerance by Inducing Heme Oxygenase-1 and Metallothionein via Nrf2 Activation in Human Lung Epithelial CellsEmerging2013
Cordyceps sinensis extract induced Nrf2, heme oxygenase-1, and metallothionein gene activity in human lung cells, improving tolerance to hypoxic stress.
Singh M, Tulsawani R, Koganti P, Chauhan A, Manickam M, Misra K — BioMed Research International
The scientific rediscovery of an ancient Chinese herbal medicine: Cordyceps sinensis Part ILineage1998
This review compiles chemical, pharmacological, and toxicological research on Cordyceps sinensis, describing mechanisms including oxygen-free-radical scavenging and antisenescence activity.
Zhu JS, Halpern GM, Jones K — J Altern Complement Med
Medicinal Mushrooms and Their Bioactive Compounds: From Traditional Use to Therapeutic Potential.2026
Medicinal mushrooms including Cordyceps militaris, Ganoderma lucidum, and Grifola frondosa contain polysaccharides and triterpenoids studied for immune support, anti-inflammatory, antioxidant, antimicrobial, and anticancer bioactivity across preclinical and clinical research.
Sadowska A; Włosek-Pawełas D; Car H — Molecules (Basel, Switzerland)
Effect of Cs-4 (Cordyceps sinensis) on exercise performance in healthy older subjects: a double-blind, placebo-controlled trialEmerging2010
Twelve weeks of Cs-4 Cordyceps sinensis raised the metabolic (ventilatory) threshold by about 10 percent in healthy older adults during exercise testing.
Chen S, Li Z, Krochmal R, Abrazado M, Kim W, Cooper CB — Journal of Alternative and Complementary Medicine
Balanced by design — we show supporting and contradicting findings. Search all studies
No product works in isolation
Every cell function above — Sense, Exchange, Transform, Build, Maintain, Adapt — needs the same broad base of optimal micronutrient levels running underneath it, all the time. CordyMax Cs-4 is not a stand-alone fix; it is one piece that plugs into that larger system. The foundation comes first, and this supports it.
Stacks well with
Pick your goal — here is what CordyMax Cs-4 pairs with for each. Nothing works in isolation; these share the same systems.
For Energy & Mitochondria
For Immune
For Gut Health
Foundational, or targeted?
Not everything in the shop is meant to be taken forever. Some products here are foundational — a daily nutrient base built for long-term, ongoing use. Others are targeted -- shorter-term support for a specific season, not a lifelong habit. If you are not sure which one this is, that is a fair question to ask us before you buy.
Learn more, on your terms
Do not take our word for it — go read. Each topic below opens a pre-loaded search so you can explore the nutrient, the mechanism, or the device for yourself.
Search the full studies libraryHow to use it
Take with water, usually earlier in the day since it is energizing for some people. Many take it before activity. Follow the brand's serving size.
Where to get it
We are lining up the best way to get this one to you. In the meantime, reach out and we will point you the right way — or browse the full shop to see every product.
See the full shopThe studies
See the research behind the science we point to.
Explore studiesThe blog
Plain-language reads on how it all fits together.
Read the blogOptimal nutrients are the definition of longevity
Long-term cell function depends on having what it needs, at the level it needs it, for as long as it needs it. That is the whole thesis behind everything we point you to here.
When you buy through our links, we earn a small commission — and that is what funds all the free education here. It never costs you more. Products are not intended to diagnose, treat, cure, or prevent any disease.
CordyMax Cs-4 is a standardized cordyceps mushroom extract, an adaptogen traditionally used to support stamina and the body's capacity to adapt to physical demand. It is a classic energy-and-endurance botanical rather than a stimulant. It suits people who want steady energy that comes from the cell, not a jolt of caffeine.
Common questions
What does CordyMax Cs-4 support?+
It supports steady, non-jittery everyday energy, healthy stamina and exercise capacity, the body's ability to adapt to physical demand, and healthy mitochondrial energy production.
How do I take it?+
Take with water, usually earlier in the day since it is energizing for some people. Many take it before activity. Follow the brand's serving size.
What makes it different?+
As an adaptogen it supports the body's own ability to meet load instead of whipping it with a stimulant, and a standardized extract keeps the dose consistent.