Niacin 500 mg 250 tabs (Pack of 2)

What the brand says

Sold as “NOW Foods - Niacin 500 mg 250 tabs (Pack of 2)”

Nutritional Health Sustained Release to Minimize Flushing A Dietary Supplement Vegetarian/Vegan Kosher Vitamins Family Owned Since 1968 GMP Quality Assured Niacin supplements may sometimes temporarily cause flushing and/or itching, but this sustained release tablet should minimize those symptoms. To further limit these uncomfortable but not dangerous symptoms, take daily and avoid missing doses.