The book "Parenteral Nutrition in Pediatrics" offers a comprehensive and practical guide to parenteral nutrition for infants and children. It highlights the crucial role of optimal nutrient supply in improving therapeutic outcomes for patients for whom oral or enteral nutrition is not possible or sufficient. The specific metabolic demands and limited nutrient reserves during childhood make adequate support through parenteral nutrition particularly important. The handbook covers the fundamentals of parenteral nutrition, the energy requirements based on the body's metabolic needs, as well as the practical aspects and indications for parenteral nutrition therapy in acute and chronic conditions. Additionally, it discusses the historical development of pediatric parenteral nutrition, the various components of nutrient mixtures, clinical monitoring, and potential complications. A multidisciplinary approach is emphasized as essential for the success of therapy to reduce morbidity and mortality and improve patients' quality of life.