SUSTAGEN OPTIMUM is a balanced oral supplement that contains probiotics, fibre, antioxidant vitamins C & E, and high quality protein providing 1.0 kcal/mL per suggested serve. It is also low in lactose. SUSTAGEN OPTIMUM is a food for special medical purposes and is specifically formulated for medical conditions where nutritional needs cannot be met through diet modification alone. Must be used under the supervision of a healthcare professional.