Well, here is my input it is only my opinion.
I am a heavy smoker and overweight. Different things apparently work for different people but......I have used Zydot for a random drug test (smoked the night before) and I passed. To be safe order the bigger bottle or drink 1 1/2 of the regular bottles. Do not use pill form of anything it doesn't work as well. That being said - I am abstaining for a test and will have been clean for 30 days when I test - I am going to use the zydot them too just in case.....good luck to all! :thumbsup: