Nestlé Isosource Protein Neutral Flavor 500ml is a complete, high-calorie, high-protein nutritional formula indicated for adults and children over 3 years of age who have increased protein and energy needs. It is especially recommended in situations of malnutrition or nutritional risk, muscle loss, post-surgical recovery, chronic disease, or states of high catabolism, always under the guidance of a healthcare professional. With an energy density of 1.3 kcal/ml, each 500ml pack provides approximately 652 kcal and 33.5g of high-quality protein, contributing to the maintenance and recovery of muscle mass and to meeting daily nutritional needs. The formula has a balanced distribution of proteins, carbohydrates, and lipids, and can be used as an exclusive or complementary food source. The composition includes milk proteins, medium-chain triglycerides (MCTs), vegetable oils, fish oil rich in omega-3 fatty acids, vitamins, and essential minerals. This combination provides a balanced supply of energy and nutrients, making it suitable for oral administration or via enteral feeding tube. The formula is clinically lactose-free, gluten-free, and fiber-free, characteristics that may facilitate its use in certain clinical situations, according to medical evaluation. Its neutral flavor allows for versatile use, and it can be consumed alone or integrated into different dietary plans when appropriate.