This simply works. I stopped cloud surfing about 7 days before I took this. The taste is not the best but it's not undrinkable keep in mind what your goal is and you will be fine! I drank a lot of water when I woke up and took it on an empty stomach. Passed a 5 panel test I purchase for like 14 dollars and passed my job test 2 hours later. Minus one star for taste of drink.