some NIACIN is called FLUSH which can make you sweat, niacin makes you SWEAT soo sweating causes excreation of toxins. Make sure the niacin says flush the non flush will not make you sweat.There have been arguements over it works or not but i took it and it made me feel like shit and didnt sweat just got hot and itchy.In the time period i took it and then took a home test i failed soo i would say no.thats just my story tho.