Quote Originally Posted by Burnt Toast
Niacin is a myth. It does nothing to help pass a U/A.
And let me explain this a bit further...

The niacin myth got its start over four decades ago by an individual with no training and experience in the medical field, L. Ron Hubbard - the founder of the Scientology cult (do a Google search on L. Ron Hubbard and niacin).
Hubbard conducted a "study" that by sitting in a sauna and ingesting niacin would remove residues of a certain (off-topic) hallucinogen and prevent "flashbacks" which were running rampant at the time. The thing is, there has not been (and still is not) a shred of evidence that can substantiate Hubbards claim.

Then some "brilliant" pothead, obviously acting under a garbled understanding, took the claim ..."Hey, if this gets rid of residues of hallucinogens, it must also get rid of THC residues"... What needs to be understood is that drug tests look for drug metabolites - not residues.

The myth had been born.

And a myth that still persists today because of people that have taken niacin before a drug test and passed, only to not realize that it was the large amounts of water that was consumed with the niacin that brought the THC metabolite concentration of the urine sample under the tests cutoff limit, thus a pass. The niacin was wrongly given credit when the real hero was the water. Its all about the water.

Hope this helps to debunk the niacin myth.