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 answer
A Verified Doctor answered
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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.
Answered on Jul 12, 2015
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