Each serving of Glutathione Zooki contains 100mg of Liposomal Glutathione and 1mg of Riboflavin. Riboflavin contributes towards the protection of cells from oxidative stress, the maintenance of normal skin, vision & red blood cells and the reduction of tiredness and fatigue. Gluten free, soy free, sugar free, 100% natural ingredients. Flavoured with natural orange, cinnamon, clove and vanilla extracts