People who live with depression have low blood levels of a specific molecule, new medical research has revealed. It's called acetyl L carnitine, and those with particularly severe, treatment resistant or childhood onset depression were Acetyl L Carnitine: Benefits, Forms, Dosing, and Side Effects Dr Brad Stanfield Buy Acetyl L Carnitine 800mg Human Performance Hub Plasma acetyl l carnitine and l carnitine in major depressive episodes: a casecontrol study before and after treatment Psychological Medicine Cambridge Core