The ingredients in our Thyroid Support have been specially selected to maximise your body’s capability to support a healthy thyroid gland.  An underperforming thyroid gland can cause hypothyroidism due to the lack of production of T3 and T4 hormones. Underactive thyroid symptoms include: low body temperature, cold sensitivity, depression, dry skin and hair, constipation, weight gain, loss of the outer third of eyebrows, sexual dysfunction Our precursor is a combination of ingredients that promote thyroid function (Potassium iodine and Coleus Forskohlii) and support immune health to protect the thyroid. Iodine (as Potassium iodine) is essential for the synthesis of thyroid hormones. Potassium iodide when taken as a supplement is therefore used to support thyroid function. Coleus Forskohlii activates enzymatic activity in the body. It promotes release of hormones from the pituitary gland, including the thyroid gland. Selenium contributes to enzymatic processes in the body and may be important in the processing of consumed and exposed toxins. Zinc supports immune health. Gotu Kola can support age-related changes in mood and cognition. Calcium Pantothenate is a component of co-enzyme A, which is an essential enzyme for the metabolism of carbohydrate, fat and protein. As iodine affects the thyroid gland, it can interfere with blood tests for thyroid function. Potassium iodide should be avoided in people with disorders of the thyroid or who are taking a medicine that affects thyroid function.  We recommend you have a blood test to confirm the status of your thyroid before embarking on this natural thyroid support precursor. See your GP or endocrinologist, alternatively get a test from Medicheck or another healthcare provider.