Does niacin clean the urine from your urine?

No. Niacin will not clean anything out of your system. It is utterly useless for that purpose. See the Related Question below for more information.

yes it works. if you take enough it will flush your system clean of the THC.

it worked for me about 10 years ago for job corps. i am going to try and see if it works for oxycodone. i will order a drug test and try it out on my self.

Nope, time is your only friend there

No, niacin will not clean drugs out of your system.