Vaine Slimming Injection Mesocartin (L Carnitine) Injections can be used to directly target and eliminate the stubborn fat that accumulates in the abdomen, obliques, upper arms, thighs, and other areas that cardio L Carnitine Injections for Weight Loss Prescription Weight Loss, Inc. How to Self Administer Subcutaneous & Intramuscular Injections L CARNITINE Dermaqual Our Fat Burn Stack combines L Carnitine, MIC B12, and B Complex to help your body convert fat into energy, support metabolism, and boost natural energy levels while maintaining lean muscle. , Weekly