Quote Originally Posted by LordLemon
OK, Day 1: Drank 32 OZ of Gatorade along with 500mg of niacin. Now, I know many claim niacin doesn't work while others say it does. I'm going with the hypothetical that it only helps clean you out. We'll see.
Those whove taken niacin before taking a U/A and passed are wrongly crediting the niacin when the real hero was the large amounts of fluids they had consumed with the niacin that allowed them to pass due to the THCA concentration in their bladder being diluted to the point where the sample registered below the cutoff thresholds of the drug screen. They wouldve passed anyway just on the fluid-loading alone and without the niacin to go with it.
Niacin does nothing to help pass a U/A. Besides, taking more niacin than the recommended daily amount of 15 mg can result in serious health consequences.
Misusing Vitamin To Foil Drug Test May Be Toxic; Plus, It Doesn't Work
Morons Overdose on Niacin While Trying to Beat a Drug Test | Wired Science | Wired.com

There is no product, nothing that can rid the body of THC except for time and fat-burning exercise.