l Carnitine Supplementation in Recovery after Exercise 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 nuclei, potentially l carnitine l tartrate Liv Hospital Thyroid medication use as an assisted bodybuilder should be approached with caution and based strictly on individual neednot just because it's what you do during prep. Too often, both competitors and non competitors