L carnitine reduces hyperthyroidism symptoms AcetylLcarnitine suppresses thyroid hormoneinduced and spontaneous anuran tadpole tail shortening Hanada 2013 Hereditas Wiley Online Library l Carnitine reduces reactive oxygen species endoplasmic reticulum stress and maintains mitochondrial function during autophagy mediated cell apoptosis in perfluorooctanesulfonate treated renal tubular cells Scientific Reports Is it safe to take L carnitine with levothyroxine (thyroid medication)? L carnitine supplementation for the management of fatigue in patients with hypothyroidism on levothyroxine treatment: a randomized, double blind, placebo controlled trial. Semantic Scholar ThyroSoothe