Hormones.gr Thyroid Supplement with L Carnitine for Cats Only Natural Pet L carnitine reduces hyperthyroidism symptoms L carnitine supplementation for the management of fatigue in patients with hypothyroidism on levothyroxine treatment: a randomized, double blind, placebo controlled trial. Semantic Scholar Carnitine reduces the lipoperoxidative damage of the membrane and apoptosis after induction of cell stress in experimental glaucoma Cell Death & Disease