URMC / Encyclopedia / Content Search Encyclopedia Nutrition Facts Lemons, raw, with peel, 1 fruit without seeds Protein (g) 1.3 Total lipid (fat) (g) 0.32 Carbohydrate, by difference (g) 11.56 Energy (kcal) 21.6 Fiber, total dietary (g) 5.08 Calcium, Ca (mg) 65.88 Iron, Fe (mg) 0.76 Magnesium, Mg (mg) 12.96 Phosphorus, P (mg) 16.2 Potassium, K (mg) 156.6 Sodium, Na (mg) 3.24 Zinc, Zn (mg) 0.11 Copper, Cu (mg) 0.28 Vitamin A, IU (IU) 32.4 Retinol (mcg) 0 Vitamin C, total ascorbic acid (mg) 83.16 Thiamin (mg) 0.05 Riboflavin (mg) 0.04 Niacin (mg) 0.22 Pantothenic acid (mg) 0.25 Vitamin B-6 (mg) 0.12 Vitamin B-12 (mcg) 0 Cholesterol (mg) 0 Fatty acids, total saturated (g) 0.04 Fatty acids, total monounsaturated (g) 0.01 Fatty acids, total polyunsaturated (g) 0.1