T2DM	Type 2 diabetes mellitus
PRISMA	Preferred Reporting Items for Systematic Reviews and Meta-Analyses
PROSPERO	International Prospective Register of Systematic Reviews
MD	Mean difference
CI	Confidence interval
HbA1c	Glycated hemoglobin
IFG	Impaired fasting glucose
IGT	Impaired glucose tolerance
FPG	fasting plasma glucose
PPG	postprandial glucose
REML	restricted maximum likelihood
RoB 2	Cochrane Risk of Bias 2
BID	Twice daily
OD	Once daily
TID	Three times daily
FBS	Fasting blood sugar
PPBS	Postprandial blood glucose
OGTT	Oral glucose tolerance test
MetS	Metabolic syndrome
IHMs	Individualized homeopathic medicines