WH Acupuncture & Herbs Centre

Qingdai is the dired powder or conglomeration processed from leaves or stems of Baphicacanthus cusia ( Nees ) Bremek., pertaining to Acanthaceae, Polygonum tinctorium Ait., pertaining to Polygonaceae, or Isatis indigotica Fort., pertaining to Cruciferae. The best is from Fujian Province, known as " Jian Qingdai". It is punded into powder for medical purpose.

[ Medicinal Properties ]: Salty and bitter; related to liver meridian.

[ Medicinal Efficacies ]: Clear heat and relieve toxicity; cool blood and resolve macula; clear liver, purge fire; tranquilize.

[ Usage and Dosage ]: 1.5-3g. As indissoluble in water, usualy it is used in pills or infused. Also it can be used externally.

[ Precautions ]: Be cautious with cold. It is bitter and cold, so should not take for log time or over dosage, otherwise stomach qi will be damaged.

 

[ Clinical Applications ]: 1. Warm toxinosis, macula, blood heat, haematemesis and epistaxis    It is good at treating macula due to warm toxinosis, combined with raw Shigao, Shengdihuang and Zhizi; for example in Qingdai Shigao Decoction. By itself, it treats haematemesis and epistaxis due to accelerated blood circulation caused by blodd heat, or combined with Shengdihuang, Mudanpi and Baimaogen.

 

2. Sore throat, mumps, heat toxin, sores and ulcers     By itself, it treats prosperous heat toxin causing swollen and sore throat, inflammation of throat, or combined with Banlangen and Gancao. In case of sores, ulcers, swelling and pain of mumps due to heat toxin, it is combined with Xuanshen, Jingyinhua and Lianqiao.

 

3.Cough, chest pain and blood-tinged sputum     It treats invasin of lung by liver fire, manifesting as cough, chest pain, blood-tinged sputum, usually combined with Haigefen; for example in Daige Powder. Also it treats cough due to lung heat, manifesting as yellow and sticky sputum, combined with Haifushi, Gualuoren and Chuanbeimu; for example in Qingdai Haishi Pills.

 

4. Summer-heat, fright epilepsy, convulsions and spasms       For fright epilepsy due to summer-heat, it is usually combined with Gancao and Huashi; for example in Biyu Powder. And for infantile convulsions and spasms, usually it is combined with Gouteng and Niuhuang; for example in Liangjing Pills.

青黛为爵床科植物马蓝Baphicacanthus cusia (Nees) Bremek、蓼科植物蓼蓝Polygonum tinctorium Ait或十字花科植物菘蓝1satis indigotica Fort．的叶或茎叶经加工制得的干燥粉末或团块。主产于福建、云南、江苏、安徽、河北等地。福建所产品质最优，称“建青黛”。秋季采收以上植物的落叶，加水浸泡，至叶腐烂，叶落脱皮时，捞去落叶，加适量石灰乳，充分搅拌至浸液由乌绿色转为深红色时，捞取液面泡沫，晒干而成。研细用。