Answer: Cordyceps militaris is a cultivated mushroom used in traditional Asian medicine and sold today for energy and stamina. Most research is lab work plus a few small exercise studies with mixed results. There is no good evidence that it improves lung function or oxygen use in everyday adults, so treat bold claims with caution and talk with a doctor if you take medicine.
- Cordyceps militaris is a cultivated fungus, distinct from wild Cordyceps sinensis.
- It contains cordycepin and polysaccharides that are studied in labs.
- Small exercise studies show mixed, modest results.
- Claims about boosting lung capacity are not supported in people.
What Cordyceps militaris actually is
Cordyceps is a group of fungi famous for growing on insects. The wild species most people have heard of, Cordyceps sinensis, grows on caterpillars in the high Himalayas and is rare and expensive. Cordyceps militaris is a different species that can be grown on grain or other substrates in a controlled setting, which makes it far more practical for supplements.
Its bright orange fruiting bodies contain compounds such as cordycepin, adenosine and polysaccharides. These are the focus of lab research on energy metabolism, immune signaling and inflammation. The Vapolung label lists organic Cordyceps militaris fruit extract as one of five blend ingredients, and the Vapolung ingredients page shows the full list.
Where the hype comes from
Cordyceps became famous in the 1990s after reports linked it to elite athletes, and the story stuck. Today it is marketed for stamina, oxygen use, and "lung power." Those phrases sound scientific, but most of them stretch a small and uneven body of research.
In traditional Chinese and Tibetan medicine, cordyceps was used as a tonic for fatigue and for the lungs and kidneys. Tradition explains why companies use it. It does not tell us whether a modern extract, at a typical supplement dose, changes anything you could measure in a healthy adult. When a label or ad uses words like "activates your lungs," we read that as marketing language and look for the evidence underneath.
What the exercise studies found
A search for Cordyceps militaris and exercise on PubMed shows a small group of human trials, often with a few dozen participants, lasting a few weeks. Some reported modest improvements in measures such as time to exhaustion or oxygen uptake during exercise testing. Others found no meaningful difference from placebo.
These studies used specific doses, often grams per day of a known extract, which you cannot assume match any blended product. Many were funded or supplied by manufacturers, and few have been repeated by independent groups. The fair summary is "mostly lab and small exercise studies, with mixed results." That is a reason for curiosity and research, not a reason to expect better breathing.
| Claim | What is known | Verdict |
|---|---|---|
| Boosts energy | Mostly lab work; small mixed trials | Unproven |
| Improves exercise capacity | Small studies, mixed results | Possible, modest at best |
| Increases lung capacity | No good human evidence | Not supported |
| Supports immune health | Lab and animal studies | Early research |
| Same as wild Cordyceps sinensis | Different species | False |
Oxygen, lungs and what training really changes
Here is a useful reference point. Your lungs move air in, and gas exchange happens across the thin walls of the alveoli, as the NHLBI explains. In healthy adults, the lungs are rarely the limit during exercise; the heart and muscles usually are. That is why regular training improves fitness mainly through the heart, blood vessels and muscle, not by enlarging the lungs.
Consider a 52-year-old recreational cyclist who wants to climb hills with less effort. A steady plan of rides, some intervals, and good sleep will change far more than any mushroom extract. Our post on exercise and lung capacity explains what training really improves and why breathlessness that is new deserves a doctor's look.
Where a daily oral spray like Vapolung fits
We place supplements after the proven foundations: not smoking, clean air, staying active, recommended vaccines and the care your doctor advises. Only then does a daily extra make sense, and only with realistic expectations.
Vapolung is an oral spray dietary supplement with a 154 mg proprietary blend per serving that includes Cordyceps militaris alongside mullein, ginger, bromelain and organic lemon. The amount of cordyceps is not disclosed, so you cannot compare it with study doses. The label icon "Respiratory activation" is marketing language, not a proven effect, as our label claims decoded article explains. If you want to try it, read Vapolung reviews and buy only from the Vapolung official website.
Cautions and when to talk to a doctor
Cordyceps is generally well tolerated in short studies, with occasional stomach upset, dry mouth or nausea. Because it may affect blood sugar, immune activity and blood clotting in lab work, people with diabetes, autoimmune conditions or bleeding disorders, and anyone taking blood thinners or immune-suppressing medicine, should ask a doctor first.
Pregnant or breastfeeding adults and people under 18 should not use it without medical advice. The NCCIH advice on using supplements wisely applies: tell all your health care providers what you take. See a doctor for breathlessness that is new or worsening, and get urgent care for chest pain or severe shortness of breath.
Read the label before the hype
Compare packages and current Vapolung sale prices after reviewing the evidence.
Get the Vapolung DiscountFrequently asked questions
Is Cordyceps militaris the same as Cordyceps sinensis?
No. They are different species; militaris is cultivated, while sinensis grows wild and is rare.
Does cordyceps increase lung capacity?
There is no good human evidence for that; most research is lab work and small exercise studies with mixed results.
How much cordyceps is in Vapolung?
Organic Cordyceps militaris fruit extract is part of a 154 mg proprietary blend per serving; the individual amount is not listed.