Nutrient-enhanced water beverage. 20 calories. Gluten free. Vegan. Refresh & focus. Brain Octane oil + B Vitamins + Pure deionized water. Mental Refreshment: You dont need sugar to get energy. An alternative fuel for your body is the unique high-energy, brain-boosting fat in Bulletproof Brain Octane oil. Extracted from the most potent part of the coconut. Brain Octane oil puts your brain on full blast without weighing you down. Fat Water is pure, deionized water mixed with micro droplets of Brain Octane oil, B vitamins and natural sweeteners for a hydrating energy boost without stimulants or sugar. bulletproof.com. Manufactured in USA.