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 Injections Nuceria Health, Miami, FL How To Give A Subcutaneous Injection And Sites The HCG Institute L Carnitine Linus Pauling Institute Oregon State University Product Spotlight! L Carnitine injections infusions and the benefits thereof!