Eden Apothecary · Herb Profile
Ophiocordyceps sinensis
Also known as Caterpillar Fungus, Dong Chong Xia Cao
Pronounced Cordyceps: KOR-dih-seps. Ophiocordyceps sinensis: oh-fee-oh-KOR-dih-seps sih-NEN-sis. Dong Chong Xia Cao: dong chong shyah tsow.
Warm and moist, a gentle building tonic: it warms Kidney yang, augments essence, and rebuilds the Lung and Kidney of the cold, dry, breathless, and exhausted, restoring breath, stamina, libido, and reserve.
On temperature, Bencao Congxin (1757) reads it as neutral. The app keeps warm, the modern reading of what the herb does in the body; the old readings are shown here but do not change it.
Avoid therapeutic doses in pregnancy unless supervised by a qualified practitioner. There is no reliable human safety data for cordyceps in pregnancy, and modern references advise erring on the side of caution: Memorial Sloan Kettering and RxList/Natural Medicines both state there is not enough reliable information to know whether it is safe and recommend avoiding use, and animal studies show cordyceps can alter plasma testosterone and other reproductive hormones, which is an additional theoretical concern in pregnancy. Occasional food-level use of the whole fungus in a broth is a dietary exposure, but concentrated extracts and therapeutic doses should be avoided in pregnancy.
Insufficient data; avoid therapeutic doses during lactation without professional guidance. It is not known whether cordyceps constituents pass into breast milk, and Memorial Sloan Kettering and RxList/Natural Medicines group breastfeeding with pregnancy in advising avoidance until safety data exist. Culinary use of the whole fungus in soup is a food-level exposure of low concern; reserve concentrated extracts for a time when better data exist or a practitioner is guiding use.
No established pediatric therapeutic dosing; use in children only under professional guidance. Cordyceps has a traditional history of food-level use in tonic broths, and cultured extracts are low in toxicity, but there is no reliable pediatric safety or dosing data for concentrated medicinal preparations. Keep any therapeutic use in a child to qualified practitioner oversight, and coordinate any use in a child with a serious respiratory, renal, or immune diagnosis through their medical team.
Cordyceps has a long record of use as a food-grade tonic (classically stewed with duck or chicken) and is generally very well tolerated; reported effects are mild and mainly digestive (nausea, dry mouth, loose stool). Three cautions carry more weight. First, wild caterpillar fungus is one of the most valuable and therefore most adulterated botanicals on earth, and both wild and some cultivated products have shown troubling heavy-metal (arsenic, lead) and undeclared-filler contamination, so source only third-party-tested material and prefer reputable cultivated Cs-4 or Cordyceps militaris. Second, because it stimulates red blood cell production in animal studies, Memorial Sloan Kettering advises that it should not be used by people with myelogenous-type cancers. Third, as an immunomodulating fungus it should be used cautiously and under guidance in active autoimmune disease and in transplant recipients on immunosuppressants, and, because it inhibits platelet aggregation, cautiously in those on blood thinners or before surgery. As a fungus it can provoke allergy in the mushroom-sensitive.
Known allergy or hypersensitivity to cordyceps or other fungi. Myelogenous-type cancers (leukemias), per Memorial Sloan Kettering, given animal evidence of red-blood-cell proliferation. Acute infection or febrile exterior illness with heat signs, and frank excess-heat states, in which a warming tonic is contraindicated until the acute stage passes. Concurrent anticoagulant or antiplatelet therapy, or the period around surgery, without medical supervision (antiplatelet action, bleeding risk). Active autoimmune disease or immunosuppressant and transplant regimens except under qualified supervision. Pregnancy and lactation at therapeutic doses without professional guidance (insufficient human safety data).
Ophiocordyceps sinensis is a globally at-risk species, assessed Vulnerable on the IUCN Red List (2020) and the first fungus listed on China's Red List. Wild populations on the Tibetan Plateau are declining sharply from decades of intense overharvest (the wild fungus is worth more than its weight in gold) compounded by climate warming that is shrinking its high-alpine range. It is not on the United Plant Savers list, which is North American in scope, but it warrants the same conservation seriousness. The responsible and honest choice is to avoid wild-harvested caterpillar fungus and use cultivated fermented mycelium (Cs-4 / Paecilomyces hepiali) or cultivated Cordyceps militaris fruiting bodies, which carry comparable actives with no pressure on the wild resource and far lower adulteration and heavy-metal risk.
Not in the canonical biblical texts nor in the classical Greco-Roman herbals of Dioscorides or Pliny; the caterpillar fungus was unknown to the ancient Mediterranean world. It is a high-altitude organism of the Tibetan Plateau and Himalaya and entered the written Chinese pharmacopoeia relatively late: absent from Li Shizhen's Ben Cao Gang Mu (1596), first noted in Wang Ang's Ben Cao Bei Yao (1694), and described in detail in Wu Yiluo's Ben Cao Cong Xin (1757). It is cited honestly as a herb of Chinese and Tibetan (Sowa Rigpa) medical tradition rather than of Scripture.
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