Fresh jalapeno peppers are low in Saturated Fat, and very low in Cholesterol and Sodium. Also a good source of Riboflavin, Niacin, Iron, Magnesium and Phosphorus, and a very good source of Dietary Fiber, Vitamin A, Vitamin C, Vitamin K, Thiamin, Vitamin B6, Folate, Potassium, Copper and Manganese.