Creatine vs L Carnitine: Key Differences and Unique Benefits Momentous Creatine Vs L Carnitine Key Differences: Creatine primarily aids in increasing muscle mass and strength when combined with other supplements like L carnitine. L carnitine seems more effective for improving high intensity exercise performance, recovery Signs & Symptoms of L Carnitine Deficiency L CARNITINE increases muscle mass, reduces fat mass. Bangkok Hospital Headquarter