I test in 5 hours

I have a drug test TODAY @ 3:00. Been clean for 17 days, took two home tests (after drinking water) and passed both. Last time was yesterday. I am pretty skinny (5'10", 150lbs) and have a fast metablolism. I also bought The Stuff, reccomended by a health food store, says it works everytime. Basically, it looks like the Water that you have to drink with it is what works, and the B-2 and Creatine Monohydrate contained in it helps the color and Creatine level. The only thing that throws me about it is it says not to drink or eat anything for 4 - 5 hour prior to taking it, then drink 16 - 32 oz of water after taking it, and to take it at least one hour before test to give it a chance to work, then piss frequenty until test. I already drank a half gallon of water this morning and have pissed at least 5 times. What is your take on this product, and does it sound like I have anything to worry about? I'm not worried at all, since I passed the home test yesterday but would appreciate any feedback.

Max, you are spot on with your product acessment, it's the water. And as you stated, the B is for color and the Creatine to assist in passing the urine validity test, though for the life of me I have yet to figure out why they add the Creatine. See, it takes Creatine 24-48 hours to metabolise into Creatinine, the metabolite measured to acess whether or not the sample is dilute.
Since you've already passed 2 home test, I also agree you have little to worry about. Good luck and post your experiance and results. N2