Not suitable whenever enteral nutrition is not permitted such as in acute gastrointestinal bleeding, gut atonia, ileus and others; it is not suitable for patients with severe forms of malassimilation and patients with congenital inability to metabolise nutrients contained in Supportan Drink; In patients with severe forms of organ failure such as severe liver or kidney insufficiency, Supportan Drink should be used with caution depending on the patient's tolerance of nitrogen.