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Grapefruit juice is a refreshing citrus beverage made by pressing or squeezing the fruit of the grapefruit tree, a hybrid between the pomelo and sweet orange. It is typically consumed fresh or chilled, with no additional ingredients required, though some variations may include a touch of sweetener. Originating in the Caribbean, it has become a popular breakfast drink worldwide.
Grapefruit juice is a low-fat, low-protein beverage that provides a moderate amount of natural carbohydrates, primarily from sugars. It is an excellent source of vitamin C, a good source of potassium, and contains beneficial plant compounds like lycopene, with a typical 8-ounce serving containing around 90-100 calories.
Culturally, grapefruit juice is famously associated with breakfast in the United States and is a key ingredient in the classic cocktail, the Paloma. Nutritionally, it is unique for containing furanocoumarins, compounds that can interact with the metabolism of certain medications, a fact that has led to specific medical advisories.