Our Cucumber contains the following nutrients: water: 137 g calories: 17 protein: 0.8 g fat: 0.2 g carbohydrate: 3.1 g, including 2.0 g of sugar fiber: 1.0 g calcium: 19.9 g iron: 0.3 mg magnesium: 17 mg phosphorus: 29.8 mg potassium: 193 mg sodium: 2.8 mg vitamin C: 4.5 mg folate: 19.9 mcg beta carotene: 44 mcg lutein + zeaxanthin 22.7 mcg vitamin K: 10.2 mcg Cucumber also contains a range of B vitamins, vitamin A, and antioxidants, including a type known as lignans.