MCT Duocal MCT Duocal is a powdered blend of carbohydrate & fat high in medium chain triglycerides (MCT). It can be used as a supplementary feed in the dietary management of conditions requiring extra calories from a combined fat & carbohydrate source, where there is LCT fat malabsorption & MCTs are required.MCT Duocal is useful as an energy enhancer in tube feeds & sip feeds. It can be taken as a supplementary drink, flavoured with fruit or other flavours to taste, or used as a milk replacer. MCT Duocal can be mixed with water to form a bland tasting high energy, low electrolyte drink, or can be easily incorporated as a powder into other foods.