vegan foods containing l carnitine Acetyl L-Carnitine, 60 Capsules Carnitine with Biosint Carnitines L-Carnitine For Weight Loss: 10
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Physiol Plant 100:241254 [Google Scholar] Frankel EN (1996) Antioxidants in lipid foods and their impact on food quality

There have not been studies done on the effects of supplements on kidney disease though

L-carnitine might increase the effects of warfarin (Coumadin) and increase the chances of bruising and bleeding

Again, this is the way that long-chain fatty acids are moved into the mitochondria, where -oxidation breaks them into acetyl-CoA for ATP production

It also helps clear acyl groups, byproducts that can bottleneck energy pathways, which shows up on an Acylcarnitine Profile