LIFE EXTENSION VIT B3 NIACIN 500 MG 100S Promotes Cardiovascular Health Dietary Supplement Niacin is called B3; because it was the third B vitamin to be discovered.

• Supplementing with niacin can help people maintain already-healthy cholesterol levels, an attribute identified in the 1950s.
• This makes it one of the most-studied nutrients for this purpose.
• No wonder Vitamin B3 Niacin is our best-selling supplement for supporting already-healthy cholesterol levels.