URMC / Encyclopedia / Content Search Encyclopedia Nutrition Facts Butterbur, (fuki), raw, 1 petiole Protein (g) 0.02 Total lipid (fat) (g) 0 Carbohydrate, by difference (g) 0.18 Energy (kcal) 0.7 Calcium, Ca (mg) 5.15 Iron, Fe (mg) 0 Magnesium, Mg (mg) 0.7 Phosphorus, P (mg) 0.6 Potassium, K (mg) 32.75 Sodium, Na (mg) 0.35 Zinc, Zn (mg) 0.01 Copper, Cu (mg) 0.01 Manganese, Mn (mg) 0.01 Selenium, Se (mcg) 0.04 Vitamin A, IU (IU) 2.5 Retinol (mcg) 0 Vitamin C, total ascorbic acid (mg) 1.58 Thiamin (mg) 0 Riboflavin (mg) 0 Niacin (mg) 0.01 Pantothenic acid (mg) 0 Vitamin B-6 (mg) 0 Folate, total (mcg) 0.5 Vitamin B-12 (mcg) 0 Folic acid (mcg) 0 Folate, DFE (mcg_DFE) 0.5 Cholesterol (mg) 0