The process works like this: intestinal microbiota convert levocarnitine to trimethylamine (TMA), which then travels to the liver where the enzyme FMO3 oxidizes it to TMAO
RESULTS The systematic review identified 23 double-blind, randomized trials [21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43] of 1,583 men with ED treated with oral antioxidant supplements (n=921) or placebo (n=860) (Fig
As of this publication date, that is a proposal rather than a final determination, and it concerns pharmacy compoundingnot a direct ruling on these dietary-supplement products
Chen et al., 2013
This explanation of liver injury, however, does not explain recent cases of liver injury attributed to Hydroxycut cases, as the product now does not generally contain green tea extract (at least according to the product labels)