Fatigue, muscle weakness, nervousness, difficulty sleeping, irregular menstrual periods in girls may all be linked to a thyroid that isn't functioning properly. Our thyroid is a small gland in front of the neck just below the skin & muscles. Although small, the thyroid has a enormously important job. Producing hormones that control metabolism, growth, sexual development & affects most organs. If our thyroid isn't operating properly, we can have problems all over our body. Also available in Powder (Kelp-T Combination) form.¬†All encapsulated products are in a pure 100% vegetable based capsule.