I would like to fix my post. I did not pass my drug test. It came up like 40.0. I thought I passed cuz they didnt do anything about it like send me to jail. Although I failed my second one I didnt go to jail becuz the level was lower. I can tell you Nicacin DOES help it get out of your system faster (however faster it may be), but it will not help you pass your test. Now if you only smoked like 2-3 hits, it could help you pass easily. I'd take 8 pills a day. Don't worry your tolerance for the vitamin will go up and you will only get the hots n itches for like the first 2-3 times u do it. If you wanna clean out your system asap id take 14 a day. I took 12 at once and thats what lowered my thc levels by 20%. ANy other questions just asked.