Thompson No Flush Niacin -- 500 mg

What the brand says

Sold as “Thompson No Flush Niacin -- 500 mg - 30 Vegetarian Capsules”

Niacin (Nicotinic Acid) is a member of the B-vitamin family and is sometimes referred to as vitamin B3. It is found naturally in meat, poultry, fish, legumes, yeast and cereal grains. Niacin is intended to provide nutritive support for normal cardiovascular health and blood lipids.