Give your body's restorative powers a boost with Primal Kitchen Collagen Fuel protein shakes. Collagen is the most abundant source of protein in the human body and one of the top choices for gut health. Our Collagen Fuels contain coconut milk as the primary source of beneficial healthy fat, helping to take the edge off hunger for hours. We source only the purest ingredients, and you won’t find fillers, preservatives or artificial anything in our Collagen Fuel. So get ready to stir, blend and shake!