This is the best quality Niacin, along with Twinlab. How can I tell -- the "flush" factor after taking 200 mg is strong, meaning it is potent.
Posted by iHerb Customer on June 2 2010 | Verified Purchase
Posted by iHerb Customer on March 30 2008 | Verified Purchase
Good Stuff. It's niacin.
Posted by iHerb Customer on October 9 2017 | Verified Purchase
I had a flushing on the first day of use.
Posted by tommix on March 4 2017 | Verified Purchase
When you take pill your fingers smells bad 20minutes from taking it. It have very synthetic smells which always makes me think twice before i take it. It works. But that smell...like some chemical waste.
Posted by iHerb Customer on October 12 2007 | Verified Purchase
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