Royal Canin Dog Veterinary Diet Calm Canine 4kg is a veterinary diet dry food formulated to help manage stress-related digestive, skin, and behavioral issues in dogs. It contains hydrolyzed casein and L-tryptophan to promote relaxation, and a blend of fibers and prebiotics to support digestive health. This therapeutic diet requires veterinary supervision, and the 4kg bag provides a suitable amount for ongoing management.