My good friend Laura from Cannon Beach Oregon would like to know how much vitamin C does raw carrot juice contain? One single cup of raw homemade carrot juice contains roughly forty percent of the daily recommended value of vitamin C. If you would like to bump that figure up per cup, then simply stir a tablespoon of lemon or lime juice into the carrot juice. One tablespoon of citrus juice should raise the vitamin C level to the hundred percent daily recommended value level. As many of you are already aware, vitamin C rich diets not only boost your immune system, they can also help prevent both heart disease and cancer. Other vitamin C rich fruits that can be juiced with carrots include kiwis, oranges, pineapple, tangerines, nectarines, peaches, grapes, and watermelon. Thanks for checking out this section of our website, do be sure to browse around some more for other recipes and information.