Ingredients: The hand-selected blend of B Vitamins including Riboflavin (B2), Niacin (B3), Pantothenic Acid (B5), Pyridoxine B6, Folic Acid B9 and Cyanocobalamine (B12) in Zest Active contribute to a normal energy-yielding metabolism. The B vitamins in Zest Active also contribute to the reduction of tiredness and fatigue. When you’ve had a hard day, or several, at work, the stress you experience can affect your immune system with an increased risk of illnesses such as upper respiratory tract infection (URTI). That’s why Revive Active contains Wellmune Beta 1,3 /1,6 Glucans by The Kerry Group, in every sachet.