Frontline Formulations L Carnitine Hawaiian Punch Amino acids L Tyrosine is the raw building block for your dopamine. It is the material your brain needs to manufacture focus. Without it, you are trying to build a bridge with no L Carnitine in the Treatment of Psychiatric and Neurological Manifestations: A Systematic Review Plasma acetyl l carnitine and l carnitine in major depressive episodes: a casecontrol study before and after treatment Psychological Medicine Cambridge Core Mitochondria function & Energy I L Carnitine I Life Extension