Injectable L Carnitine 500mg ml (20ml) : Amazon.ca: Health & Personal Care Subcutaneous Injection Sites and Instructions for Safe Self Administration Levocarnitine injection is used for..??? L carnitine is an amino acid derivative that plays a crucial role in the bodys energy production processes. As an injectable supplement, L carnitine has been employed to support various health L Carnitine Injections: A Clinical Guide for Practitioners National Medical Resources Inc L Carnitine Linus Pauling Institute Oregon State University