L carnitine is primarily synthesized in the liver from the amino acids lysine and methionine through a series of four enzymatic reactions, with the liver and kidneys converting the precursor butyrobetaine into active LiquiCarn 4oz (120mL) Cardiomyopathies in cats Veterinarian Karlsruhe Arndt Small Animal Center Role of carnitine in disease Nutrition & Metabolism Springer Nature Link Hill's Prescription Diet r d Weight Reduction Chicken Flavor Dry Cat Food 8.5 lb Bag 1800PetMeds Use of L carnitine in canine and feline obesity management Dr+Vet AndersenPets