'SmartHeart Gold selects high-quality Lamb as the first ingredient, combined with white fish to support strong muscles and reduce the risk of chicken allergies. Rice provides an easily digestible source of carbohydrates, while postbiotics help maintain digestive health, promote firm stools, and support immunity. Entiched with collagen for healthy bones and joints, marine fish oil for brain and nervous system support, and natural antioxidants to strengthen daily immune defenses.