Vitamin B3 (Niacin) | University of Maryland Medical Center

Vitamin B3 (Niacin) Overview Vitamin B3 is one of 8 B vitamins. It is also known as niacin (nicotinic acid) and has 2 other forms, niacinamide (nicotinamide) and inositol hexanicotinate, which have different effects from niacin. All B vitamins help the bo

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