☯ TCM Properties
Eliminates abdominal masses, removes toxicity, induces diuresis, eliminates Dampness, kills parasites and alleviates pain; Opens the Orifices
Traditional Chinese Uses
Chan Chu is the dried body (or the parotid-gland secretion, Chan Su) of the toad Bufo gargarizans, a pungent, warm, toxic substance of the Heart, Liver, Spleen and Lung channels. It is used to relieve toxicity, reduce swelling and stop pain for deep-rooted boils, carbuncles, abscesses, scrofula and toxic sores, and to open the orifices and disperse accumulation for abdominal masses, tympanites and infantile malnutrition (gan ji). Modern integrative oncology employs toad preparations (e.g., Hua Chan Su) as adjuncts in cancer care.
It is strongly toxic owing to bufadienolide cardiac glycosides. Internal use is minute (milligram-range), only in prepared form under expert supervision; overdose causes dangerous cardiac and gastrointestinal reactions. Contraindicated in pregnancy.
Botanical Description
Chan Chu is the dried whole body of the toad, principally Bufo bufo gargarizans Cantor or Bufo melanostictus Schneider (Bufonidae), large nocturnal terrestrial amphibians widely distributed across East and Southeast Asia. Adult toads measure 7-12 cm in body length, with dry, warty, brown to grey dorsal skin and prominent parotoid glands behind the eyes that secrete a milky white venom containing bufadienolides (bufotalin, bufalin, cinobufagin) and biogenic amines. In classical TCM, the dried whole toad is considered acrid, cool, and toxic, used to resolve toxins, reduce swelling, dispel water, and treat carbuncles, scrofula, and edema. The white parotoid secretion, dried separately, constitutes the distinct drug Chan Su, used in small doses for shock, malignant boils, and certain cardiac conditions. Owing to the cardiotoxicity of bufadienolides, both Chan Chu and Chan Su are strictly dose-controlled in modern Chinese pharmacopoeial practice, and ingestion outside professional supervision can cause fatal arrhythmia.
Dosage
| Form | Amount | Frequency | Duration | Population | Notes |
|---|---|---|---|---|---|
| decoction | 6-15g | Daily | — | — | — |
This information is for educational purposes only and is not intended to replace professional medical advice. Always consult a qualified healthcare provider before using any herbal remedy, especially if you are pregnant, nursing, or taking medications.
📝 Notes
Public notes from the community and your own private notes on Chan Chu.
No notes yet.