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 Plasma acetyl l carnitine and l carnitine in major depressive episodes: a casecontrol study before and after treatment Psychological Medicine Cambridge Core Frontiers Carnitine and Depression valproate [TUSOM Pharmwiki] Novel Approaches to Bipolar: What Worked, and What Did Not, in 2019 Psychiatric Times Carnitine: Genetic Variants Affecting Mitochondrial Energy and Health