I have a drug test in approx 2 weeks, and will not smoke weed for those weeks... But I got this detox just to make sure I pass. I'm not sure if I should open it and start taking this, when I've heard a lot of mixed things about it, when I can just go pay an extra $20 to get an drink I know will work guaranteed... And those drinks do work, I know, I've used them twice so far.

Opinions? Personal Experiences? Help? Thanks