You should never take 420, because it, and all other "cleansers" don't work. The only thing that can metabolize THC out of your fat cells is time. There is nothing on earth you can take to "cleanse"...
Niacin does not clean drugs from your system. Any drugs. Moreover, massive amounts of niacin can cause liver damage or even complete liver failure. See the Related Link and Question below if you...
Borrow a non-pothead's urine. Even a nonsmoker can smoke a couple of joints and pass a test a week later. It also depends on fluid intake and fat percentage. However, that's not for if you are taking...