Health benefits of cilantro leaves (coriander). Cilantro herb is very low in calories and contains no cholesterol. However, its deep-green leaves possess good amounts of antioxidants, essential oils, vitamins, and dietary fiber, which may help reduce LDL or bad cholesterol levels in the blood.t is also rich in many vital vitamins, including folic-acid, riboflavin, niacin, vitamin-A, beta carotene, vitamin-C, which are essential for optimum health. Vitamin-C is a powerful natural antioxidant. 100 g of cilantro leaves provide 30% of daily recommended levels of vitamin-C.