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Minneapolis, MN
A 21-year-old female asked:

How much niacin can i take in one day? using to help cleanse system of thc. also working out a ton and drinking plenty of water.

1 doctor answer3 doctors weighed in
Dr. Alan Wartenberg
A Verified Doctoranswered
Addiction Medicine 50 years experience
It doesn't work: and you shouldn't be trying. Niacin is potentially toxic in high doses, and doses greater than 1000 mg per day are not recommended. It can cause severe headache and problems related to vasodilatation. Neither working out nor drinking water will increase your clearance of THC, and overly dilute urine will cause you to "fail" a urine drug test. Stop using cannabis and it will take care of itself.
Dr. Atul Singh
Dr. Atul Singh commented
Nephrology and Dialysis 29 years experience
Niacin when used even for lowering lipids is now not recommended and not effective. Stopping use of THC is best option.
Jul 12, 2015
Last updated Jul 12, 2015


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