Manuka C™ is scientifically formulated to support optimal immune system function. It includes evidence-based ingredients containing a blend of three ascorbates combined with glutathione, zinc and Manuka honey powder. Ascorbic acid, zinc and glutathione are vital for the optimal functioning of the immune system. They enhance immune cell function to support the immune defence system and offer antioxidant protection. Manuka-C™ may help to reduce the duration and severity of common cold symptoms.