2.1.1 Search strategy
A comprehensive search was performed on the major databases, namely
PubMed, Embase, Cochrane Library, and Web of Science, covering all
publications since their establishment up to March 2023, without any
publication restrictions. To ensure a comprehensive search, the
appropriate search term ”treatment combined with disease” was selected
for identifying relevant studies on icariin’s efficacy in inhibiting
inflammation. Keywords related to icariin, Epimedium, Yin Yang Huo,
inflammation, and inflammatory disease were searched in the databases
(Supplementary Form 1).