Study ID	Intervention	FBG levels (mmol/L)	2hr GTT FBG (mmol/L)	Normalisation of FBG: RR [95% CI]	HbA1c (%)
Fan GJ 2004	Jiantang bushen Tang	−0.15 [0.42, 0.12]	−0.83 [−1.84, 0.18]	1.72 [1.04, 2.86]	-
Hao AZ 2004	Xiaoke Huaya tablet	−1.40 [−1.72, − 1.08]	−1.46 [−1.83, −1.09]	2.54 [1.70, 3.79]	−0.63 [−0.99, − 0.27]
Li CP 2004	Qimai Jiangtang Yin formula	−0.03 [−0.32, 0.26]		2.89 [1.41, 5.90]	-
Tang QZ 2007	Shan yao, Shan zha, Huang qi etc	−0.09 [−0.35, 0.17]	−2.31 [−3.20, −1.42]	1.92 [1.28, 2.90]	−0.87 [−1.43, − 0.31]
Wei AS 2001	Xiaoke Yuye decoction	−0.39 [0.99, 021]	−1.54 [−1.65, −1.43]	1.89 [1.14, 3.14]	−0.06 [−0.12, 0.00]
Yang B 2004	Tang Kang Yin decoction	−0.21 [−0.33, − 0.09]	−1.66 [−2.21, −1.11]	-	-
Yao Z 2001	Tang Heng I	−1.24 [−2.53, 0.05]	−1.25 [−3.30, 0.80]	5.00 [1.26, 19.87]	-
Zeng YH 2006	Liu Wei Di Huang capsule	−1.19 [−1.46, − 0.92]	−2.77 [−3.17, −2.37]	-	-
Zhou DY 2003	Jinqi Jiangtang tablet	−0.58 [−0.74, − 0.42]	−0.57 [−0.67, −0.47]	-	-