there isnt a single herb, pharmaceutical, supplement, or detox that will have any effect on the metabolites stored in fat cells.
the ONLY thing that works is excessive exercising.
drinking water does nothing as the metabolites are not water soluble. you only drink lots of water starting at day 3 before the test.and the reason you do that is to dilute the metabolite level in your urine to hope it falls bellow the cut off. you must remember to take 1 or 2 big multi vites every day while doing that too. labs can tell if there is a disproportionate amount of water to urea and other nutes.
and a note to MANY people, b3/niacin does NOTHING to effect your rate of expulsion either. the myth is based off of the allergic reaction people have when they take as much as is said to detox you. your metabolism doesn't speed up, you just turn red and itchy cause your body has to break ti down cause it becomes toxic.