This is our top selling Detox cleansing drink. You want to Drink this product an hour before a urine analysis. The most important direction after drinking the detox formula is urinating 4-5 times. So you can completely empty your bladder. If you do not do this then your urine test will come back positive. This is the main reason that unlike our synethic urine options 99% success rate. Most drinks are more around 90% success. We have carried this X-Pulsion for a while now and it has our best customer feedback of any Detox drink we have carried in our store.