Individually disclosed at 125% of the Daily Value.
Vitamin B3, as niacin, is one of two ingredients on Vasoryn's label with its own printed amount: 20mg, or 125% of the Daily Value.
Niacin plays a role in normal energy-releasing metabolism, and at this dose sits at a genuinely nutritional level rather than a token amount.
At higher doses than this, niacin is known to cause a temporary, harmless skin flush; 20mg is on the lower end and less likely to produce that effect for most people.