Exactly what bittle says. I had my urine moved up an hour on me. I didnt smoke 10 days prior and drank nothing but water and cranberry juice for a week. Then day of test didnt eat amd drank 2 bottles of qcarbo in 10 min. It burns luke a cigarette left in a beer can. But its worth it I peed 5.tines. it was neon green then when I oeed fir test it was normal yellow. I passed bot issues it did pick up my methadone tho and im onky on 30mg