Supplement of the week: L Carnitine! This one doesn't just boost fat metabolismit can also improve recovery, endurance, and even brain function. If you're serious about performance and longevity, this might be Let's cut through the marketing noise and look at the actual science of fat loss. A lot of supplements make big claims, but L Carnitine is heavily backed by research for its WHYZ Acetyl L Carnitine Powder, 125g, Fat Metabolism & Memory Supplement, 250 Uses Walmart.com Frontiers Age and APOE affect L carnitine system metabolites in the brain in the APOE TR model