Our thyroid supplement helps increase energy levels & concentration. It promotes a sense of overall well-being & mood enhancement. Our all-natural formula contains L-tyrosine which is an amino acid that is vital to maintaining a healthy mood because it’s the precursor of several neurotransmitters needed for mental alertness, regulation of anxiety and blood pressure, and the production of thyroid hormones T3 and T4. No added fillers, additives or other unnatural ingredients. This supplement has not been manufactured with wheat, gluten, soy, milk, egg, fish, or tree nut ingredients.