Abstract
Objective:
The aim of this study was to investigate the influence of herbal medicine (HM) prescribed by doctors of Korean medicine (KMD) on liver function in Korea.
Design and interventions:
For this multicenter, prospective, observational study, we enrolled patients who wished to take HM prescribed by KMD for various medical purposes in Korea. One hundred and twenty-two (122) patients took HM for an average of 20.6 ± 8.4 (mean ± standard deviation) days, and completed questionnaires.
Outcome measures:
Liver function tests (LFTs) were performed before (first test) and after each HM treatment (second test). For LFT, aspartate aminotransferase, alanine aminotransferase, total bilirubin (t-Bil), direct bilirubin, alkaline phosphatase, and γ-glutamyl transferase were measured.
Results:
There were no significant changes in LFT data between the first and second tests, except in the t-Bil level. However, all data of total bilirubin level in second test were within normal range, except only one patient. Multivariate analysis did not identify any herb that significantly increased t-Bil; hence no hepatotoxic herb was found. Twenty-one (21) of the 122 patients were abnormal on first testing, and 10 at the second testing. Of the patients taking herbs, 4 changed from normal to abnormal and 15 from abnormal to normal (p = 0.019).
Conclusion:
The current study showed that ingestion of HM prescribed by KMD did not increase the frequency of abnormal LFTs, at least in the short term.