Compounded Carnitine (L) Injection Empower Pharmacy When Injectable L Carnitine Is Chosen Over Supplements for Wellness Support Pharmacokinetics of L Carnitine Clinical Pharmacokinetics Springer Nature Link PDF) Comparison of pharmacokinetics of L carnitine, Acetyl L carnitine and Propionyl Lcarnitine after single oral administration of L carnitine in healthy volunteers ORAL VS. INJECTABLE L CARNITINE , Does it really matter which you use? , Both have pros and cons but it really comes down to what is going to be most suited to use as an individual athlete.,