speak what you like, but i know that my test wasnt dirty because of it. if you dont believe me try it yourself. also, putting bleach in your piss DOES work, me and a lot of my homies have done this and got clean tests so unless your saying that we're all wrong at that they were all just "purely coincedental" dont be speaking. i understand that your defending what you said, but im saying that your wrong. its never been proven either way that niacin cleans you or not. i dont think it does, i think it masks it well enough tho.