Hua Shi

Talcum, Talc

Dosage

Internal administration (decocted in poach): 9-24 grams/day. 5:1 concentrated dosage: 1.8-4.8g/day.

Chemical Composition

Mg3Si4O10(OH)2, or (3MgO · 4SiO2 · H2O)- Al2O3. (1) , (2) , (3)

Precautions

Hua Shi is contraindicated for spleen and stomach deficiencies, febrile diseases with accompanying body fluid damages, and spermatorrhea due to kidney deficiency. Exercise caution when prescribing Hua Shi for pregnant women.

Pharmacology

External Use

Used externally, Hua Shi helps keep the skin dry, soft, and smooth. When applied to broken and inflamed skin, Hua Shi can absorb chemical irritants and/or toxins, and thereby protect the skin from more serious damage. Hua Shi is also shown to promote the growth of granuloma in the vagina, rectum, and on trauma surfaces, therefore, it is appropriate for either internal administration or use on (external) trauma surfaces. (4) , (5) Furthermore, Hua Shi is shown in vitro to have an inhibitory effect on Typhoid bacillus and Bacillus paratyphosus A. (6)

References

  1. Yu Zong Yuan, et al. Measuring the main components of Hua Shi. Journal of Drug Analysis. 1993;13(2):119-120.
  2. Zhao Zhong Jie, et al. Quality standards for medicinal Hua Shi. Journal of Materia Medica. 1988;11(6):30-33.
  3. Editorial Committee of Chinese Materia Medica, State Drug Administration of China. Chinese Materia Medica. Shanghai Science and Technology Press, 1998.
  4. Zhang Chang Shao. Pharmacology, 2nd edition. Beijing: People’s Medical Publishing House, 1962.
  5. Chen Xin Qian, et al. Revised Materia Medica, 13th edition. Beijing: People’s Medical Publishing House, 1992.
  6. Microorganism Group, Shandong Medical College. Experiments on 110 Chinese medicinal materials’ bacteriostatic effect. Journal of Shandong Medical College. 1959;(8):42.