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., Pharmacokinetics of L Carnitine Clinical Pharmacokinetics Springer Nature Link The Role of L Carnitine in Distance Athletes PDF) Enhanced Bioavailability of L Carnitine After Painless Intradermal Delivery vs. Oral Administration in Rats Injectable vs Oral L Carnitine: Which Works Better? AWP Enhanced Bioavailability of L Carnitine After Painless Intradermal Delivery vs. Oral Administration in Rats Pharmaceutical Research Springer Nature Link