There are many forms of vitamin C, but we should focus on the healthiest for our bodies. Vitamin C levels in the blood are higher in people who eat plenty of fruits and vegetables, but the effects of vitamin C in these foods aren't known to be the same as those found in those who consume it in supplements. Vitamin C supplements that contain citrus extract or flavonoids are an excellent choice if you want to boost your body's absorption of this vitamin. According to Ora Organic, supplements derived by organic acerola cherries is the healthiest form of vitamin C. If you can't eat foods rich in vitamin C, you can take organic supplements which contain natural ingredients.