I have been using both the #1 and #2 formulas for over a month now (almost 2 full months). I am just now beginning to pass parasites(huge surprise~~was not expecting this). I have been sick for years so I thought that I needed a more throurough cleaning and continued to stay on the #2 after the 15 days. Especially decided to stay on it b/c when I went off of it for a few days my symptoms begun to come back (fogginess, low energy and etc) I beleive the #2 is doing a good job at pulling out the toxins and that is why I experience more energy and clarity while on it. I will continue to take it for at least another month.