Choose foods containing vitamin C to enhance iron absorption. You can enhance your body's absorption of iron by drinking citrus juice or eating other foods rich in vitamin C at the same time that you eat high-iron foods. Vitamin C in citrus juices, like orange juice, helps your body to better absorb dietary iron.Vitamin C is also found in: 1  Broccoli.2  Grapefruit. 3  Kiwi.4  Leafy greens.5  Melons.itamin C in citrus juices, like orange juice, helps your body to better absorb dietary iron. Vitamin C is also found in: 1  Broccoli. 2  Grapefruit. 3  Kiwi. 4  Leafy greens. 5  Melons.