Vitamin B Complex Definition

A group of unrelated water-soluble vitamins found in liver, yeast, etc., including: a) vitamin B₁ (see thiamine) b) vitamin B₂ (see riboflavin) c) vitamin B₆ (see pyridoxine) d) nicotinic acid e) pantothenic acid f) biotin g) inositol h) para-aminobenzoic acid i) choline j) folic acid k) vitamin B₁₂, a complex vitamin, C₆₃H₉₀N₁₄O₁₄PCo, containing trivalent cobalt, essential for the normal maturation of erythrocytes, and for normal growth and neurological function, and used esp. in treating pernicious anemia and as an animal feed supplement.