Coconut water, the liquid endosperm of green coconuts (Cocos nucifera), is a refreshing beverage, a natural rehydration medium, and is used as a supplement in nutrient media for tissue culture. Because it offers higher amounts of electrolytes such as potassium and magnesium than regular sports drinks, coconut water is known as a “natural isotonic sports drink.” Functioning as a prebiotic, coconut water solids support beneficial bacteria in the gut.