Hello, it is indeed considered that the lack of height in girls is caused by calcium deficiency. It is recommended to go to the hospital to check whether there is calcium deficiency. If there is calcium deficiency, taking 999 Aonuo Calcium Zinc Gluconate Oral Solution can effectively improve the lack of height. Yes, 999 Aonuo Calcium Zinc Gluconate Oral Solution is a patented formula of calcium and zinc supplementation medicine, which can effectively supplement calcium. In addition, it is best to give your children more calcium-rich foods such as milk, dried shrimps, and soy products to provide balanced nutrition.