Subcutaneous Injection Sites and Instructions for Safe Self Administration L Carnitine Injections Nuceria Health, Miami, FL L Carnitine Injection Kare Pharmacy Levocarnitine Injection: Package Insert Prescribing Info Are some methods of administering HRT inherently better than others? Audience requested: subcutaneous injections. Subcutaneous means under the skin. In this type of injection, a short needle is used to inject medication L CARNITINE doses seen most say 600mg per day that cost would add up fast is that the basic dose if it's an injection