Extracted from natural kelp and uniquely formulated with both ammonium iodide plus iodine for complete body assimilation and optimal results. In the stomach it becomes 100% unbound 'free iodine' : the safer way to support your thyroid and balance your body's metabolism, sleep and mood. High Strength Liquid Iodine 625mcg per dose Unique formula of ammonium iodide and iodine for complete body assimilation and maximum results Support your THYROID, ENERGY, NERVOUS SYSTEM, MOOD and SKIN Liquid sublingual drops offer superior absorption to tablets PURE - No artificial colourings, preservatives or sweeteners Manufactured in the UK in violet glass for maximum UV protection to prolong the life of your Bioactive Iodine Each bottle lasts almost 9 months.