Glycemic index of grapefruit juice (unsweetened)
The glycemic index (GI) of grapefruit juice (unsweetened) equals to 45, which classifies it as a low GI food.
Glycemic load of grapefruit juice (unsweetened)
The glycemic load (GL) of grapefruit juice (unsweetened) is equal to 2.7, which classifies it as a low GL food.
Grapefruit juice (unsweetened): Calories and Nutritional info
100 grams of grapefruit juice (unsweetened) contain 28 kcal (117 kJ), 3.0 grams of proteins, 6.1 grams of carbohydrates, and 0.0 grams of fats.