Higher nature ocean kelp 180 capsulethis canadian kelp ascophyllum nodosum is cultivated in clean ocean water and screened for pollutants iodine is essential for healthy thyroid function contains naturally sourced iodine and trace minerals from clean ocean water the thyroid controls metabolism and therefore body weight it is also important for healthy hair and nails may not be suitable for people with fish or crustacean allergy consult your doctor if taking thyroxine or are hyperthyroid i