Multiple choice general knowledge Niacin is Vitamin B3 Vitamin B2 Vitamin B5 Vitamin B12 Reveal answer Fill a bubble to check yourself A Correct answer Explanation Niacin is the scientific name for Vitamin B3. Vitamin B2 is Riboflavin, B5 is Pantothenic acid, and B12 is Cobalamin. Niacin is essential for converting food into energy and maintaining skin and nerve health.