What is the Vegan Meal Replacement?. It's a nutritionally complete shake containing all 26 essential vitamins & minerals that you require each day. As it’s plant based, it’s suitable for vegans, is gluten & dairy free & tastes delicious. A meal replacement is comprised of the essential nutrients required by your body to maintain normal physiological functioning. These nutrients are Protein, Fats, Carbohydrates, Vitamins, Minerals & fibre..