Glandular ingredients, plus iodine and acetyl-l-tyrosine, to support thyroid function.*Spectra 303-T provides a high quality, thyroxine-free glandular extract with L-tyrosine, iodine, and other nutrients to support healthy thyroid function.* Research shows that L-tyrosine and iodine are critical for the production of the thyroid hormones, thyroxine (T4) and triiodothyronine (T3). Contains a freeze-dried thyroid glandular Supports metabolism and immune health* Helps maintain healthy energy levels*
