- ¹Vitamin B1, B2, B5, B6, B12, C, Niacin, and Biotin contribute to normal energy-yielding metabolism.²Pantothenic acid contributes to normal mental performance.³Vitamin C contributes to the protection of cells from oxidative stress. ⁴Vitamin B6 and vitamin B12 contribute to normal red blood cell formation and reduce tiredness and fatigue.⁵ All items available in selected countries only. Please check your local FitLine e-shop or subsidiary for further information.