Nutrini Peptisorb Nutrini Peptisorb is a 1kcal/ml semi elemental, nutritionally complete tube feed designed for children aged 1-6 years or 8-20kg in body weight. Nutrini Peptisorb is based on short chain peptides for the dietary management of disease related malnutrition in patients with malabsorption and/or maldigestion. Nutrini Peptisorb is gluten free.