Thyroid Care™ from Terry Naturally features iodine and L-tyrosine to support thyroid and metabolic function, daily energy, healthy weight management and more. Iodine—from potassium iodide, sodium iodide and molecular iodine—aids thyroid hormone synthesis while the amino acid L-tyrosine boosts thyroxine creation. No sugar, yeast, wheat, gluten, corn, soy, dairy or artificial coloring, flavoring or preservatives. Non-GMO.