i-Throid® is a superior iodine formulation created to nutritionally support a healthy thyroid. i-Throid® contains the ideal balance of iodide and free elemental iodine which is highly absorbable and binds with tyrosine to produce thyroid hormones. 6.25MG FORMULA: A highly absorbable, balanced ratio of iodine (2.5 mg) and iodide (3.75 mg)