A: Pomegranate juice, which is usually available in produce sections of the grocery store, is very high in antioxidants because it’s loaded with flavonoids and other polyphenol phytochemicals. Whether you choose 100 percent pomegranate juice or a blend of pomegranate and another juice, the potassium content will be almost as high as that in orange juice. It is substantially more than in other juices known for their polyphenol content such as grape juice and cranberry juice. However, pomegranate juice is not a source of vitamin C, so you need to include other fruits or vegetables that supply this important vitamin in your diet. In addition, although pomegranate juice is generally 100 percent juice with no added sugars, it is concentrated in calories and natural sugar. An eight-ounce glass of it contains 140 to 160 calories, which is similar to grape juice and cranberry juice and more than the 100 to 110 calories in the same portion of orange or grapefruit juice. Consequently, to control calories or regulate your blood sugar, you should limit your portion size of pomegranate juice.”