Clinical Effects and Safety of Zhi Sou San for Cough: A Meta-Analysis of Randomized Trials.

Published in: Evidence-based complementary and alternative medicine : eCAM (2017)

This meta-analysis shows that ZSS has significant additional benefits and relative safety in treating cough. However, more rigorously designed investigations and studies, with large sample sizes, are needed because of the methodological flaws and low quality of the included trials in this meta-analysis.

Keyphrases

systematic review
case control
meta analyses
randomized controlled trial
quality improvement