A Brief video on injectable L carnitine and an article on Oral application and the relevant research. : r Supplements L carnitina: qu es y para qu sirve 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), Levocarnitine Injection: Package Insert Prescribing Info Las virtudes de los suplementos de L carnitina en adultos mayores