Calcium, iron, zinc and selenium are essential trace elements for the human body, so what are their functions? Calcium is mainly to ensure the strong brain power, improve the human body's ability to judge, and can effectively inhibit the abnormal excitement of the brain nerves. If the lack of calcium is prone to neuromuscular disorders, it is also easy to cause cramps; iron It is the main component of hemoglobin. If there is iron deficiency, it is easy to cause iron deficiency anemia; if the lack of zinc, it will easily lead to the decline of memory, but also cause loss of appetite; if the lack of zinc, it will easily lead to Hypothyroidism can also easily cause depression. Therefore, it is necessary to supplement these elements. Calcium, iron, zinc and selenium tablets produced by Guangzhou Changshengkang Biotechnology Co., Ltd. can supplement these elements!