I have only used sure-jell for passing drug tests. I love to smoke and will until I die. :) I have done the method different ways and passed every way. I have drank the mixture within two hours of taking a test and have passed. I have drank the mixture two days prior to taking a test and drank green tea and coffee to add the color to my urine and still passed. I drank the mixture once and it showed that I had a bladder infection, and nothing else. I am a firm believer that this stuff works. Like they say, it is pectin...we can get the same benefits by adding any citrus fruit to our water. Good luck to all!!