Gan Qi
Toxicodendron vernicifluum (Stokes) F.A. Barkl.
☯ TCM Properties
Breaks Blood and Dispels Stasis; Promotes Menstruation; Disperses Accumulations and Dissipates Nodules; Expels Parasites
Botanical Description
Toxicodendron vernicifluum (Stokes) F.A. Barkley (Anacardiaceae), the Chinese or Japanese lacquer tree, is a deciduous tree native to China and cultivated in East Asia, reaching 8-20 m with pinnately compound leaves and panicles of small yellowish-green flowers. The medicinal Gan Qi consists of the dried, processed sap (lacquer) obtained by tapping the trunk; the raw milky sap polymerizes on exposure to air into a hard, glossy resin used for centuries as lacquerware finish. For medicinal use the dried lacquer is broken into pieces and dry-fried or calcined until smoking ceases, which substantially reduces its allergenicity. The active urushiol-related catechols cause severe contact dermatitis in raw form. In traditional Chinese medicine, processed Gan Qi is acrid, warm, and toxic, entering the liver and spleen channels; it strongly breaks up blood stasis, dissolves accumulations, and kills parasites, used cautiously for amenorrhea, abdominal masses, and intestinal worms. Contraindicated in pregnancy and in sensitive individuals.
Dosage
| Form | Amount | Frequency | Duration | Population | Notes |
|---|---|---|---|---|---|
| decoction | 6-15g | Daily | — | — | — |
Cultural & Historical Context
Traditional Chinese Uses
Gan Qi (lacquer, dried urushiol resin) is a warm, toxic substance used in Chinese medicine to break Blood stasis and expel parasites. Its stasis-dispersing action addresses amenorrhea, abdominal masses, and retention of placenta from Blood stagnation. It is also used for certain types of intestinal parasitic infestation. Due to its high toxicity and potential for allergic reactions, it is rarely used clinically and requires careful professional handling.
Traditional American Uses
None Documented
Important Disclaimer
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.