coriander leaves are rich in Vitamin C, Vitamin K and protein. They also contain small amounts of calcium, phosphorous, potassium, thiamin, niacin and carotene. Coriander seeds and essential oil both have blood sugar-lowering effects on the human body. The effect is actually so therapeutic and likely that people who suffer from low blood sugar or take blood sugar-lowering medicine are warned to be careful with using coriander products. Get the best coriander from us.