wow, this is my first post but i've been a lurker for quite some time and it seems that some people don't want opposing ideas without getting all preachy and shit about how serious this is freedom,job ,and all that crap. sometimes the good info gets lost in the bicthin. feel like i am reading excerpts of the VIEW. dont know about niacin but i just got a call today stating i passed piss test with dilution,creatine and metamucil. all i know is it worked for me. dont know if it will work for you and THATS THE FACT JACK