L Carnitine is often marketed as a fat burner, but most people dont realize that oral and injectable L Carnitine are not the same..Oral L Carnitine has poor absorption (only 20% bioavailability), Injectable L Carnitine for Slimming: Does It Really Work? National Medical Resources Inc Injectable L Carnitine: Does It Really Work for Fat Loss? Acetyl L Carnitine vs L Carnitine: 4 Key Differences Momentous