Enriched formula with L-tryptophan, phosphatidylserine, and antioxidants to support cognitive health in senior dogs. Leucine stimulates protein synthesis and helps maintain lean muscle mass. A controlled phosphorus level, combined with omega-3s (EPA and DHA), helps slow the progression of kidney disease. A blend of amino acids, antioxidants, and omega-3s, along with sodium regulation, promotes heart health. Finally, the S/O index ensures a reduced risk of urinary crystals and stones (struvite and calcium oxalate). An optimized diet for the well-being of aging dogs.