URMC / Encyclopedia / Content Search Encyclopedia Nutrition Facts Grapefruit, raw, pink and red, Florida, 1 fruit (3-3/4" dia) Protein (g) 0.68 Total lipid (fat) (g) 0.12 Carbohydrate, by difference (g) 9.22 Energy (kcal) 36.9 Fiber, total dietary (g) 1.35 Calcium, Ca (mg) 18.45 Iron, Fe (mg) 0.15 Magnesium, Mg (mg) 9.84 Phosphorus, P (mg) 11.07 Potassium, K (mg) 156.21 Sodium, Na (mg) 0 Zinc, Zn (mg) 0.09 Copper, Cu (mg) 0.05 Manganese, Mn (mg) 0.01 Selenium, Se (mcg) 1.72 Vitamin A, IU (IU) 318.57 Retinol (mcg) 0 Vitamin C, total ascorbic acid (mg) 45.51 Thiamin (mg) 0.05 Riboflavin (mg) 0.02 Niacin (mg) 0.25 Pantothenic acid (mg) 0.35 Vitamin B-6 (mg) 0.05 Folate, total (mcg) 11.07 Vitamin B-12 (mcg) 0 Folic acid (mcg) 0 Folate, DFE (mcg_DFE) 11.07 Cholesterol (mg) 0 Fatty acids, total saturated (g) 0.02 Fatty acids, total monounsaturated (g) 0.02 Fatty acids, total polyunsaturated (g) 0.03