How long is niacin in your system for?


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Niacin Niacin has a short half life of 20 to 45 minutes. This is the time it takes for your body to reduce plasma drug levels by half. It usually takes around 5.5 half lives for a drug to be eliminated from your system. As an estimate then , after taking a dose of Niacin it should be out of your system within 110mins to 247mins (2hrs to 4hrs).

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