Curry leaves (M. koenigii) and Mustard Greens (B. juncea) have multiple blood sugar lowering effects. - GreenMedInfo Summary

Effect of Murraya koenigii and Brassica juncea on carbohydrate metabolism has been studied using rats as experimental animals. Both showed significant hypoglycemic action. There was increase in the concentration of hepatic glycogen and glycogenesis, as evident from the increased activity of glycogen synthetase, and decrease in glycogenolysis and gluconeogenesis as evident from the decreased activity of glycogen phosphorylase and gluconeogenic enzymes.