Ok, so I had been worrying lately because I landed a new job and put my two weeks in at my old job. After doing so about a week into my 2 weeks I got a text saying I would possibly have to do a drug test which scared me because I could now potentially be out of a job completely. So I kept searching for the best ways to pass without spending a lot of money. I lost a job opportunity about a 2 weeks ago due to a failed drug test. For that I had purchased something called the "Rescue Combo". It cost me $150 total with shipping and all and it DIDN'T WORK! After following the instructions and almost throwing up from having to do the ridiculous instructions and paying all that money it didn't work and I failed and lost that job. So I saw this thread and others and had some people in my area tell me about Niacin and I was skeptical. So I decided to try it. I went to my local vitamin store and spent $8 on a bottle of 500mg niacin with 100 pills in it. I smoked last on Tuesday 1/21/14 in the morning. I got the pills on Wednesday 1/22/14 and took one that night. I continued to not smoke and took 1 pill in the morning and one pill at night with drinking moderate, not even that much, water. I took a drug test I scheduled myself to test if it was working today 1/25/14 at 9am. I woke up late sadly at 8:12am when it was at 9. So I quickly took a pill and drank about 60oz of water within that hour and peed three times and voided before getting at the testing location. I urinated in the cup and they tested and got the results there and I passed. No THC detected. I was extremely surprised this actually worked and where as there may not be exactly scientific proof that many have said, given personal experience now I can say that it must work in some way. I mean the extreme hot flash and burning and red skin that comes when you take Niacin is uncomfortable yes, but well worth keeping a job. For a little extra background on me why I think its amazing that it works is I'm a 22 year old Male at about 290 lbs (Yes I'm a fatty) and smoked prior to Tuesday about 1-2 Bowls a day or more for over a year straight. So it inst easy to flush someone this big with that frequency of smoking why I decided to post for people curious about this. I hope this helps anyone looking or back up anyone saying that this has worked for them. I am now a believer and extremely happy with the price and results.