Carnitine and Thyroid Disease page 1 Life Extension The supplement secret for hyperthyroidism? , When dealing with hyperthyroidism or Graves disease, L carnitine can be a total game changer. It helps block the entry of thyroid hormone into the cell Amazon.com: Seeking Health Acetyl L Carnitine Acetyl L Carnitine Supplement Supports Energy, Healthy Fat Metabolism, & Memory Health 500 mg, 90 Capsules : Health & Household L Carnitine Linus Pauling Institute Oregon State University Does L Carnitine help manage hyperthyroidism symptoms? Consensus