You may use either Grapefruit juice or Classic Coke. We strongly recommend the grapefruit juice because it mixes well with the olive oil & hides the taste & texture well. It is also better for you. For a lot of people, if your not used to drinking soda, and you down 12 oz of the fizzy stuff, you may become ill.
The choice is still yours, and the flush will be effective either way, we have just found the grapefruit juice to be more effective in disguise& easier on the tummy.
