A double blind, randomized, placebo controlled, parallel group trial aimed to determine whether levothyroxine provided clinical benefits in older persons with subclinical hypothyroidism. No apparent benefits were observed. http: nej.md 2nEn5vm This Successive thyroid storms treated with L carnitine and low doses of Methimazole The American Journal of Medicine Mitochondrial control of fuel switching via carnitine biosynthesis Science Vitamins to be taken away from thyroid medication Levothyroxine (Synthroid) Supplement Interactions Supplements To Avoid While Taking Thyroid Hormones ConsumerLab.com Altered carnitine acylcarnitine profiles in levothyroxine treated congenital hypothyroid patients with fatigue: An LC MS MS based study from Bangladesh PLOS One