Levocarnitine Oral Solution: Package Insert Prescribing Info Want to recover faster? This might be the missing piece. Watch this. # lcarnitine #recovery #musclegrowth #supplements #fitnessscience 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), Oral Vs. Injectable L Carnitine Weight Wise Weight Loss Center Unlock Peak Performance & Fertility with L Carnitine! Did you know that injectable L Carnitine is a game changer compared to oral supplements? While oral L Carnitine has low bioavailability (only ~14 18%