The present disclosure relates to nutritional composition in powder form capable of being used as an adjunct to a ketogenic diet program. The disclosed ketogenic nutritional composition can produce elevated and sustained levels of ketone bodies in blood and can synergistically induce nutritional ketosis in a subject. The ketogenic nutritional composition disclosed herein can exhibit improved physical stability, solubility, homogeneity and aqueous dispersibility as compared to existing ketogenic diet supplements, and is substantially free of carbohydrates. Further the disclosed ketogenic nutritional composition can contribute to reduction in body fat mass in individuals who are trying to lose weight, and can provide long-lasting energy and improved athletic performance to individuals during strenuous exercise. In an aspect, the present disclosure provides a ketogenic nutritional composition in powder form for promoting nutritional ketosis in a subject in need thereof, wherein the composition can include a fat, protein, vitamin, and phospholipids.