I have never used The Master Cleanse program, so forgive me if this advice doesn't work with that program. My first instinct when reading your post was, is it ok to dilute the solution? If that would take away from the effects of it, then it might not be a good idea. But if diluting with water is allowed, it might help make the taste a little less intense, and a little more bearable. You might even find after drinking it diluted for awhile that you adjust to the taste enough to eventually not have to dilute at all.