1. Male or female patients, at least 1 month of age.
2. Patients who require PN for at least 5 days/week.
3. Patients who receive 80% or more of their total energy requirements as PN at enrollment and who are expected to receive 80% or more of their total energy requirements as PN for at least 56 days.
4. Written informed consent. In case of pediatric patients, informed consent must be obtained from parent(s) or legal representatives. If possible, the assent of the pediatric patient must also be obtained (according to local law).
You may not be if
1. Use of any other lipid injectable emulsion than SMOFlipid within 6 months prior to study participation
2. Known hypersensitivity to fish, egg, soybean, or peanut proteins, or to any of the active ingredients or excipients of SMOFlipid.
3. Hyperlipidemia or disorders of lipid metabolism characterized by hypertriglyceridemia (serum triglyceride concentration \>250 mg/dL in infants or \>400 mg/dL in older pediatric and adult patients).