URMC / Encyclopedia / Content Search Encyclopedia Nutrition Facts Lettuce, green leaf, raw, 1 head Protein (g) 4.9 Total lipid (fat) (g) 0.54 Carbohydrate, by difference (g) 10.04 Energy (kcal) 54 Sugars, total (g) 2.81 Fiber, total dietary (g) 4.68 Calcium, Ca (mg) 129.6 Iron, Fe (mg) 3.1 Magnesium, Mg (mg) 46.8 Phosphorus, P (mg) 104.4 Potassium, K (mg) 698.4 Sodium, Na (mg) 100.8 Zinc, Zn (mg) 0.65 Copper, Cu (mg) 0.1 Manganese, Mn (mg) 0.9 Selenium, Se (mcg) 2.16 Vitamin A, IU (IU) 26658 Retinol (mcg) 0 Carotene, beta (mcg) 15994.8 Carotene, alpha (mcg) 0 Vitamin E (alpha-tocopherol) (mg) 1.04 Cryptoxanthin, beta (mcg) 0 Lycopene (mcg) 0 Lutein + zeaxanthin (mcg) 6228 Vitamin C, total ascorbic acid (mg) 64.8 Thiamin (mg) 0.25 Riboflavin (mg) 0.29 Niacin (mg) 1.35 Pantothenic acid (mg) 0.48 Vitamin B-6 (mg) 0.32 Folate, total (mcg) 136.8 Vitamin B-12 (mcg) 0 Vitamin K (phylloquinone) (mcg) 624.96 Folic acid (mcg) 0 Folate, DFE (mcg_DFE) 136.8 Cholesterol (mg) 0 Fatty acids, total saturated (g) 0.07 Fatty acids, total monounsaturated (g) 0.02 Fatty acids, total polyunsaturated (g) 0.3