The effects of the traditional Chinese medicine, 'Banxia Houpo Tang (Hange-Koboku To)' on the swallowing reflex in Parkinson's disease

K. Iwasaki, Q. Wang, H. Seki, K. Satoh, A. Takeda, H. Arai, H. Sasaki

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)


Swallowing disorder is common in Parkinson's disease (PD). We studied the swallowing disorder in PD, and tested the efficacy of Banxia Houpo Tang (BHT, a Chinese traditional medicine) in improving the swallowing reflex of PD patients. The Swallowing reflex test is a simple method used to detect swallowing disorders in patients with cerebrovascular disease. Because we observed previously that BHT significantly improved the swallowing reflex in cerebrovascular patients, we studied whether BHT was also effective in improving the swallowing disorder in patients with PD. 23 PD patients (13 males, 10 females, mean age 66.0 ± 9.3, Hoehn and Yahr (H-Y) mean score = 2.8) were evaluated for swallowing reflex and the concentration of substance-P in their saliva before and after 4 weeks of BHT treatment. The swallowing reflex before treatment was significantly delayed, according to the H-Y score (Spearman's p = 0.014, R2 = 0.463). The swallowing reflex before BHT treatment was 3.66 ± 0.98 sec, and after BHT treatment, it improved significantly, to 2.27 ± 0.54 sec (p < 0.0001). Substance-P concentration in PD patients saliva before treatment was significantly lower than in healthy controls (p = 0.007), but showed no significant change after BHT treatment. Our research shows that the swallowing reflex is an effective method to evaluate the swallowing disorder in PD. BHT can significantly improved the swallowing reflex in PD patients, and therefore can be a hopeful candidate for preventing aspiration pneumonia in PD.

Original languageEnglish
Pages (from-to)259-263
Number of pages5
Issue number4
Publication statusPublished - 2000 Jul


  • Banxia-Houpo Tang (Hange-Koboku To)
  • Herb
  • Parkinson's disease
  • Silent aspiration
  • Substance-P
  • Swallowing disorder
  • Traditional Chinese medicine

ASJC Scopus subject areas

  • Molecular Medicine
  • Pharmacology
  • Pharmaceutical Science
  • Drug Discovery
  • Complementary and alternative medicine


Dive into the research topics of 'The effects of the traditional Chinese medicine, 'Banxia Houpo Tang (Hange-Koboku To)' on the swallowing reflex in Parkinson's disease'. Together they form a unique fingerprint.

Cite this