Levocarnitine Injection: Package Insert Prescribing Info Injectable vs Oral L Carnitine: Which Works Better? AWP 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), Las virtudes de los suplementos de L carnitina en adultos mayores A Brief video on injectable L carnitine and an article on Oral application and the relevant research. : r Supplements L Carnitine Injection vs. Oral Supplements: Which is More Effective? Katalyst Wellness