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Let’s begin by clarifying the numerous terms that are seen when discussing vitamin B3, which is a water-soluble essential nutrient. Vitamin B3 is known as niacin or nicotinic acid (NTA). Niacinamide (NCA) or nicotinamide is the “amide” form of vitamin B3. What that means is that outside of the pyridine ring, the carboxyl group (COOH) Read more »