Thanks to Prolonged Release Niacin by 21st Century, you can now supplement Niacin without any unpleasant flushing! Also known as vitamin B-3, niacin plays a role in several processes in the human body, including skin, digestive, cardiovascular and nervous system health. Each serving delivers 500 mg of niacin.

• Plays a vital role in converting food into energy

• Compare to Slo-Niacin®

• Prolonged release means no unpleasant flushing sensation

• Gluten Free, Non-GMO