Folic acid, thiamin, vitamins A, B6, and C, riboflavin, and niacin are some of the important vitamins and nutrients that are in fenugreek leaves. Potassium, iron, phosphorous, and calcium are some of the most important nutrients found in fenugreek leaves. Fenugreek leaves are also a good source of vitamin K. About 50 calories of energy come from 100 grammes of fenugreek leaves.