Salcatonin is the type of calcitonin hormone found in salmon.As in humans, salmon calcitonin is a peptide hormone secreted by the parafollicular cells of the thyroid gland in response to hypercalcemia, which lowers blood calcium and phosphate by promoting renal excretion.Synthetic salmon calcitonin may be used therapeutically in humans, as it is twenty times more active than human calcitonin and has a longer half-life. It is used as therapy for Paget's disease and severe hypercalcemia. Calcitonin salmon is used to treat osteoporosis in women who are at least 5 years past menopause and cannot or do not want to take estrogen products. Osteoporosis is a disease that causes bones to weaken and break more easily. Calcitonin is a human hormone that is also found in salmon. It works by preventing bone breakdown and increasing bone density (thickness).