Naturally occurring in fruits and vegetables, especially oranges and other citrus fruits, is water-soluble vitamin C. If you would rather avoid the sugar in fruit, chewable vitamin C pills make it easy to get your required daily intake without any preparation or extra sugar. Best Offers in Mothers Day offers, Best deals, Many Offers .Increasing the quantity of vitamin C-rich vegetables in your diet is another option. Red bell peppers have about three times the amount of vitamin C as oranges. Broccoli, spinach, and tomatoes are some other foods high in vitamin C.