Well hopefully it works. I just took it. I went to GNC and bought a 55 dollar bottle of qcarbo32 (the stronger version) also drank 2 gallons of water. Woke up 30 mins before and took my multi vitamin (orange triad) then pissed and it was completely clear. Then drove to the test and at the test my piss was pretty yellow so I'm hoping it worked. Pray for me!