TABLE 1.

Search strategy until August 10, 2021.

		PubMed	Embase	Cochrane	Web of science
#1	Cinnamo*	6,537	3	523	13,913
#2	Cinnamic	28,049	9,996	45	8,123
#3	Safety	720,387	1,404,766	261,301	958,659
#4	Security	124,523	104,253	3,436	413,579
#5	Efficacy	942,083	1,868,531	385,327	1,128,079
#6	Efficiency	1,100,052	574,856	19,035	1,954,432
#7	Effect*	10,087,377	6,113,819	1,039,614	13,376,402
#8	Hepa*	1,083,168	3,792	69,829	961,359
#9	Liver	1,197,424	1,788,028	64,507	949,464
#10	#1 or #2	33,921	9,999	560	21,500
#11	#3 or #4	833,939	1,496,295	263,913	1,348,452
#12	#5 or #6 or #7	11,034,060	7,662,872	1,176,084	15,198,353
#13	#8 or #9	1,716,602	1,790,406	103,091	1,533,755
#14	#10 and #11	888	384	110	446
#15	#10 and #12	21,806	3,097	505	8,614
#16	#10 and #13	3,336	483	79	1,128
#17	#10 and #11 and #12	717	180	108	338
#18	#10 and #12 and #13	2,458	237	78	636
#19	#17 and #18	101	24	31	50