VetriFlex is our most advanced joint support formula dogs over 60 pounds. It combines the clinically proven GlycoFlex 3 formula with ingredients extracted using Phytosome More Bioavailable for superior bioavailability. The phytosome complex easily crosses the gut barrier resulting in improved nutrient absorption and significantly higher blood levels. VetriFlex provides clinical strength joint support to dogs over 60 pounds with advanced conditions. Pets love these delicious chicken liver-flavored chews that are suitable for sensitive diets.