Solid Gold NutrientBoost kibble line was created specifically to improve gut health in cats and dogs using blood plasma as a novel ingredient. Solid Gold NutrientBoost line is launching with three dog kibble recipes in lamb, beef and chicken flavors, and a cat recipe in lamb. Meal toppers are also available for both cats and dogs. Blood plasma is a natural, nutrient-rich liquid comprised of proteins including albumin, globulin and fibrinogen.