Subcutaneous Injection Sites and Instructions for Safe Self Administration L Carnitine injection is recommended at 1 ampule every 2 3 days for best results. The L Carnitine is taken intravenously either by normal injection or using a butterfly needle. After taking this L Carnitine, you L carnitine injection how to use I dosages for maximum fat loss YouTube How to Inject L Carnitine for Weight Loss Safely How to Self Administer Subcutaneous & Intramuscular Injections