The Right Way to Take L Carnitine to Boost Your Training When Neuropathy Starts to Improve Peripheral neuropathy often improves when oxidative stress, inflammation, mitochondrial function, and nerve repair pathways are addressed together. Alpha lipoic acid (ALA) ALA targets oxidative stress and HerbGreat Nerve Support Plus Sciatica & Neuropathy Relief Supplement with Turmeric, B Vitamins, Alpha Lipoic Acid Did You Know? Some people report a fishy smell after supplementing with L carnitine. This happens because certain gut bacteria convert carnitine to trimethylamine, a malodorous compound found in rotting fish.