Currently there are "18 comments" on this Question:

  1. Minerva says:

    THE MOST COMMON METHOD IS TO TAKE A 500MG TABLET IN THE MORNING THE NIACIN WILL GIVE YOU A FLUSHING FEELING AS IF YOUR ITCHING. ALSO, DO NOT BUY THE TIME RELEASED FLUSH FREE NIACIN PILLS AS THEY on how much you weigh, and how much THC you have in your system.

  2. Bethany says:

    Does niacin pills and cranberry pills REALLY clean out your system take? A friend of mine has? If so, how long does it usually an interview coming up and he heard they work. I

  3. Sherrill says:

    Niacin does not clean drugs — any drug — out of your system. More:http://wiki.answers.com/Q/How_many_500mg_niacin_flush_free_pills_do_you_need_to_clean_out_your_system

  4. Berta says:

    Impossible, this is an urban myth, niacin does nothing to mask or clean thc from your system, in fact it can cause a false positive. Your only chance is to dilute your urine and color it on the morning of the test by drinking coffee or soda… More:http://www.chacha.com/question/how-many-500mg-niacin-pills-wud-a-person-have-to-take-to-clean-their-system-of-thc%3F-tw

  5. Kirstie says:

    Large doses of niacin can cause liver damage, peptic ulcers, and skin rashes. Marijuana can only leave your system naturally. More:http://www.chacha.com/question/how-many-500mg-niacin-pills-at-a-time-do-you-have-to-take-to-get-marijuana-out-of-your-system

    • Clarisa says:

      Have you ever tried them? Me and a bunch of others that I know have taken niacin pills and it has helped pass drug tests. So before you go out giving people wrong information try it for yourself and stop looking for answers on wikipedia.

  6. Sheilah says:

    Oct 4, 2011 Scientific studies have shown Niacin does not affect drug scr How many 500mg niacin pills does it take to clean your system? You need

  7. Lillie says:

    Four to six hours before your desired cleanse, take 500mg of niacin orally. This will prevent your body from burning fat for blood sugar, releasing more THC into your bloodstream. 5 Niacin–vitamin B3–is an ingredient in many over-the- counter detoxification products because of its effects on Side Effects of Niacin Pills Detail:http://www.ehow.com/how_8165011_use-clean-thc-out-system.html

  8. Tiffany black says:

    NIACIN DOES WORK. I AM LIVING PROOF, IT WORKED FOR ME LIKE FOUR HOURS AFTER I TOOK IT. MY URINE DID LOOK LIKE WATER THOUGH.

  9. Christy mays says:

    I do cocain will they work for me I really need to now

  10. tez says:

    i wish people would just speak the truth about this. niacin pills and cranberry juice does work

  11. hotmelt30 says:

    niacin does work i was taking 500mg 2tabs at atimes 3 times a day for 1 week and passed my drug test and i am a heavy smoker and i drink 2 gallons a water a day so dont let people tell you it dont work u have to be on top of it do it everyday when your piss looks like water ……

  12. Erica CMD says:

    I really hope this works I took two 500 mg of this stuff and am about to take another 500mg just to be sure. I started at like 1 something but have to get tested before 6 hopefully it works

  13. Sean k says:

    How long after you “used” did u take it and
    How many mg..? And for your test how many days
    Did u have until..did it pass it. Just wanna make
    Sure I’m safe..!

    Thanks,
    Sean

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