Buy Now brands Arginine/Ornithine mix and eat them like candy. I swear by this supplement, it has saved me from brain fogs and coma like fatigue. It's a lifesaver, literally soaks up ammonia in the blood, like a sponge.
"Arginine is a contributing member of the various amino acids found in the urea cycle, which is responsible for detoxifying ammonia. Ammonia is a by-product of bacterial metabolism in the intestinal tract and must be detoxified in the liver."