Table 1: Search strategy (PubMed).

Chinese herbal medicine

#1Chinese medic
#2TCMs or TCM
#3Chinese herb
#4Chinese drug
#5Chinese formul
#6Chinese plant
#7Chinese prescri
#8Chinese remed
#9Chinese materia medica
#10kampo
#11herb medic
#12“Medicine, Chinese traditional” (MeSH Terms)
#13“Medicine, East Asian Traditional” (MeSH Terms)
#14“Medicine, kampo” (MeSH Terms)
#15“Herbal Medicine” (MeSH Terms)
#16“drugs, Chinese herbal” (MeSH Terms)
#17#1 or #2 or #3 or #4 or #5 or #6 or #7 or #8 or #9 or #10 or #11 or #12 or #13 or #14 or #15 or #16

Metabolic syndrome

#18“Metabolic Syndrome X” (MeSH Terms)
#19metabolic syndrome
#20cardiometabolic syndrome
#21insulin resistance syndrome
#22“syndrome X”
#23“Reaven’s syndrome”
#24CHAOS AND Australia
#25#18 or #19 or #20 or #21 or #22 or #23 or #24

Randomized controlled trials

#26((clinical (Title/Abstract) AND trial (Title/Abstract)) OR clinical trials (MeSH Terms) OR clinical trial (Publication Type) OR random (Title/Abstract) OR random allocation (MeSH Terms) OR therapeutic use (MeSH Subheadings))
#27#17 AND #25 AND #26