No, niacin will not help clean drugs (any drug) out of your system. It is totally useless for that purpose. Moreover, massive doses of niacin can put you in the hospital, and can cause liver damage...
yes u can. i take a 2500 mg dose twice a day starting four days b4 my next d test. i use fast acting niacine too. i actually love the buring feeling now, and believe it or not, but niacine is...