ENDUR-ACIN backed by clinical research provides nicotinic acid - the only form of B3 niacin with targeted benefits for heart health and lipid metabolism - in a proprietary vegetable based wax matrix. The unique wax matrix delivery system not only ensures a gradual measured release of nicotinic acid over a 6-8 hour period but also helps eliminate digestive upset and skin flushing that can occur with immediate release forms. ideal for men and women interested in advanced nutritional support for the heart health and cholesterol balance.*