L Carnitine vs Acetyl L Carnitine: Key Differences Acetyl L. Carnitine Supplement Metabolics ALCAR Acetyl L Carnitine Supplement ALCAR HCl The carnitine shuttle. l carnitine and acetyl l carnitine enter the Download Scientific Diagram L Carnitine and Creatine are both game changers for fitness, but they each shine in different ways! SAVE this as your quick guide! L Carnitine, found in red meat, fish, and chicken, supports fat