The present disclosure provides a nutritional formula comprising alpha-lactalbumin enriched whey protein concentrate; lactoferrin; oleic acid-palmitic acid-oleic acid triglyceride; lactose; lutein; docosahexanoic acid; arachidonic acid; galactooligosaccharides; and fructooligosaccharides. The provided nutritional formulas may be useful in providing nutrition and/or promoting postnatal development of a subject (e.g., promoting postnatal development of an infant's gastrointestinal tract, promoting proper gastrointestinal function, nutrient absorption, proper immune system development, etc.). Also provided are powder forms, reconstituted formulas, kits, methods, and uses that include or involve a nutritional formula described herein.