An 8-ounce glass of 100% grapefruit juice or ½ of a medium fresh grapefruit are excellent sources of vitamin C, providing 60% (juice) and 50% (fruit) of the recommended Daily Value.*
Vitamin C plays a key role in supporting a healthy immune system 1-4 and may reduce the duration and severity of cold symptoms.5 Vitamin C is thought to have an anti-histamine effect,1,4,6 and may support lung function.1,7 Furthermore, the absorption of iron found in plant-based foods may increase when consumed with vitamin C.1-4 Thus, consuming fresh grapefruit or 100% grapefruit juice along with plants high in iron, such as dark leafy greens or lentils, may help your body absorb more iron.
Vitamin C is an antioxidant found in food and is necessary for collagen formation, an essential component of skin, bones, gums, and cartilage.1-4 Vitamin C also helps regenerate vitamin E into its antioxidant form providing further protection against damage.1,3
Fruits and vegetables supply about 90 percent of the vitamin C in the diets of the general population.3 Citrus fruits and juices are some of the richest sources of vitamin C.8 Kale, kiwi, and cauliflower also have significant amounts of vitamin C.
Citrus juices, such as 100% grapefruit juice, are reported to be the largest contributor of vitamin C in the diet.9
Learn more about the health benefits of fresh Florida Grapefruit and Florida Grapefruit Juice.
* Daily Value: Based on a 2000 calorie diet. FDA rounding rules applied when calculating percent DV based upon 2018 rules. Information is not intended for labeling food in packaged form. Nutrient values may vary based on brand or product types.