Grass-Fed Lamb Marrow Sprinkles for Hip & Joint support are a simple, powerful way to upgrade your pet's daily meals. Unleash the power of Iceland with Viking Boost, a single-ingredient meal topper made from grass-fed lamb marrow to support hips, joints, and everyday movement in dogs and cats. Lamb marrow is naturally rich in collagen, glucosamine and other nutrients that help nourish joints and support an active lifestyle without synthetic supplements or fillers.