Effect of "Dang-Qui-Shao-Yao-San" a Chinese medicinal prescription for dysmenorrhea on uterus contractility in vitro

C. S. Hsu, J. Kay Yang, L. L. Yang

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)


Dysmenorrhea is directly related to elevated level of prostaglandin F 2α (PGF2α), and is treated with nonsteroid anti-inflammatory drugs. Though efficacy of the latter is rapid, the effect is temporary, and they cause many side effects to the liver, kidney and digestive system. Because of this, Chinese medicinal therapy is being considered as a feasible alternative medicine. In this study, Dang-Qui-Shao-Yao-San (DQSYS), one of Chinese medicinal prescriptions was selected. A 50% alcohol solution was used to extract the active ingredients and create a freeze-dried product. Using rat uterine smooth muscle in vitro, DQSYS was used to suppress spontaneous contractions and PGF2α induced contractions. Then acetylcholine, ergonovine, propranolol, oxytocin and KCl were used to analyze the physiological mechanisms. The results show that DQSYS has the antagonistic action on both PGF2α and Ach induced uterine contraction. Furthermore, it has the antagonistic effect on contraction caused by KCl-depolarization. These actions may be the major mechanism of the beneficial effect of Chinese prescription in treating dysmenorrhea.

Original languageEnglish
Pages (from-to)94-100
Number of pages7
Issue number1-2
Publication statusPublished - Jan 5 2006


  • Ach
  • Dang-Qui-Shao-Yao-San
  • Ergonovine
  • KCl
  • Oxytocin
  • PGF
  • Propranolol

ASJC Scopus subject areas

  • Plant Science
  • Drug Discovery
  • Organic Chemistry
  • Pharmacology


Dive into the research topics of 'Effect of "Dang-Qui-Shao-Yao-San" a Chinese medicinal prescription for dysmenorrhea on uterus contractility in vitro'. Together they form a unique fingerprint.

Cite this