Hill's® Science Diet® Mature Adult Active Longevity Original dog food is formulated to sustain mobility, lean muscles and organ health. Providing precisely balanced, easy-to-digest nutrition to promote youthful vitality. This diet contains natural sources of glucosamine & chondroitin, for joint health, from natural ingredients. Sustains healthy vital organs with balanced sodium and phosphorus levels and supports lean muscles with high quality proteins and L-carnitine. Synergistic combination of key nutrients restores youthful energy while enriched with omega-6 fatty acids and vitamin E to improve skin & coat. Made with high quality ingredients for great taste.