Thyreogen is a dietary supplement with natural thyroid peptides. It normalizes the function of the thyroid gland by reducing its peptide deficiency and restoring protein synthesis inside its cells. The thyroid affects almost every tissue in the body because it regulates cell metabolism—the ability to break down food and convert it into energy. When the thyroid is not working correctly, the consequences can be very serious. One of these negative effects is hyperthyroidism, which may cause weight loss, anxiety or nervousness, increased sweating, tremors, diarrhea, palpitations, muscular weakness, and heat intolerance. Hypothyroidism, another thyroid disorder, can cause fatigue, weight gain, depression, lethargy, dry skin, cold intolerance, voice change, change in menses, and muscle cramps.