Ultra Raw Thyroid is a glandular extract of the endocrine gland responsible for controlling metabolism and growth and may benefit individuals with slow metabolism, low energy, melancholy, cold hands and feet, and restlessness. New. Easy to Digest Capsules. Dietary Supplement. Whole Raw tissue concentrated from bovine sources specially processed (freeze-dried) at or below -5C to preserve natural occurring vitamins, enzymes, nucleotides, lipoproteins and all other cellular components. Raw tissue concentrates imported from New Zealand are made from toxin-free lyophilized glands from animals grazed on rangeland free of pesticides, growth hormones, antibiotics or chemical additives.