Lutein is a natural visual nutrient, without any side effects, but excessive intake will increase the burden on the liver. Huabei Pharmaceutical Co., Ltd. protects the source and protects lutein ester tablets. The stability of lutein ester is good, and its bioavailability is higher than lutein 6 1.6%. Lutein esters can be naturally hydrolyzed into free lutein in human body, and free lutein can supplement the fundus and play an effective role.