Meal replacement protein powders are specifically formulated to replace a full meal and provide a balanced macronutrient profile of carbohydrates, proteins, and fats. They are made from high-quality protein sources such as whey, casein, or pea protein and can also contain other ingredients such as fibers, vitamins, minerals, and healthy fats. They are usually low in calories and can be used as a convenient and nutritious alternative to a full meal.