The Right Way to Take L Carnitine to Boost Your Training 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 What Are L Carnitine Injections Used For? L Carnitine Injection Levocarnitine IV L Carnitine Injections Nuceria Health, Miami, FL L Carnitine and Mounjaro: Safety and Interactions Explained Bolt Pharmacy