Didn't another study show carnitine was good for the heart? Enhanced Bioavailability of L Carnitine After Painless Intradermal Delivery vs. Oral Administration in Rats Pharmaceutical Research Springer Nature Link L Carnitine is an amino acid that supports weight loss as it is a fat burning supplement. L Carnitine Push is a direct and quick IV infusion procedure that can be done on a weekly CARNITOR (levocarnitine) Oral Solution (1 g per 10 mL multidose) Max Muscle Max Liquid L Carnitine 3500MG 32Serv. 480Ml Fruit Punch Maxmuscle Elite L carnitine is effective for both fat loss and athletic performance. However, oral L carnitine has lower bioavailability and can be harmful at high doses, so it should be avoided. , Even cardiologists