Cortex Cleistocalycis Operculati
Aliases：Shui Weng Shu Pi (recorded in Bencao Qiuyuan — Seeking the Origins of Materia Medica). (This is an alternative name for Shui Weng Pi.)
Shui Weng Pi is a traditional Chinese medicinal material. It is the dried bark of Cleistocalyx operculatus (Roxb.) Merr. et Perry, a plant belonging to the genus Cleistocalyx of the family Myrtaceae. It was first recorded in Shengcaoyao Xingbei Yao (Essentials of Medicinal Herbs).
Efficacy & Actions
Clears heat and removes toxicity, dries dampness, kills parasites, and relieves itching.
Indications
Dampness with erosion of the feet, eczema, scabies and ringworm, chancre sores, scrotal abscess, and burns and scalds.
Modern Pharmacology
Modern research has shown that Shui Weng Pi possesses certain antibacterial effects.
Usage & Dosage
For topical use: apply an appropriate amount, mashed for application; or decoct in water for fumigation and washing; or decoct and apply the liquid topically. This herb is for external use only and is generally not taken orally.
Contraindications
Use with caution during pregnancy. This herb is for external use only and should not be taken orally.
Selected Formulas
For scrotal abscess (Lingnan Caicai Lu) Take the second layer bark of Shuiweng (Syzygium nervosum), decoct in water and wash the affected area over ten times. If the abscess has ruptured, add 5 qian of Gancaojie (licorice node) and decoct together. For leprosy, scrotal itching, and tinea pedis (Guangzhou Air Force, Common Chinese Herbal Medicine Manual) Take an appropriate amount of water banyan bark, decoct in water and wash externally. For eczema, tinea, and skin itching (Guangxi Bencao Xuanbian) Take water banyan bark, decoct in water and wash externally.
Medicinal Parts
Dried bark.
Selection & Storage
Store in a cool, dry place, protected from moisture and insects.
