URMC / Encyclopedia / Content Search Encyclopedia Nutrition Facts Lettuce, iceberg (includes crisphead types), raw, 1 head, large Protein (g) 7.02 Total lipid (fat) (g) 1.09 Carbohydrate, by difference (g) 23.17 Energy (kcal) 109.2 Sugars, total (g) 13.73 Fiber, total dietary (g) 9.36 Calcium, Ca (mg) 140.4 Iron, Fe (mg) 3.2 Magnesium, Mg (mg) 54.6 Phosphorus, P (mg) 156 Potassium, K (mg) 1099.8 Sodium, Na (mg) 78 Zinc, Zn (mg) 1.17 Copper, Cu (mg) 0.2 Manganese, Mn (mg) 0.98 Selenium, Se (mcg) 0.78 Vitamin A, IU (IU) 3915.6 Retinol (mcg) 0 Carotene, beta (mcg) 2332.2 Carotene, alpha (mcg) 31.2 Vitamin E (alpha-tocopherol) (mg) 1.4 Cryptoxanthin, beta (mcg) 0 Lycopene (mcg) 0 Lutein + zeaxanthin (mcg) 2160.6 Vitamin C, total ascorbic acid (mg) 21.84 Thiamin (mg) 0.32 Riboflavin (mg) 0.2 Niacin (mg) 0.96 Pantothenic acid (mg) 0.71 Vitamin B-6 (mg) 0.33 Folate, total (mcg) 226.2 Vitamin B-12 (mcg) 0 Vitamin K (phylloquinone) (mcg) 187.98 Folic acid (mcg) 0 Folate, DFE (mcg_DFE) 226.2 Cholesterol (mg) 0 Fatty acids, total saturated (g) 0.14 Fatty acids, total monounsaturated (g) 0.05 Fatty acids, total polyunsaturated (g) 0.58