It didn't work for my friend, all Strip NC does is help dillute your urine. you can do that on ya own and still have $50 dollars in your pocket for better things. Don't waste your money. Most people probably passed because of dillution (drinking all that freaking water with it) than the actual strip drink. While dillution call help in some test, in lab test it can equal an automatic fail/retest because certain things in your urine (gravity, ph, creatine) will be extremely low and not normal. But with cheap drug stick test, dilution is a easy method to choose and pass with. Just try drinking water and gatorade (or any enegry drink/tea) and switching off between each other so you won't flush to much creatine out your body.