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Lutein, also known as carotenoids, carotenols, phytolutein, Lutein, marigold and phytolutein, is called Lutein in English. The molecular formula is C40H56O2 with a relative molecular weight of 568.85.Orange yellow powder, pulpy or liquid, insoluble in water, soluble in hexane and other organic solvents.
Hsinchu Yingshan Chen, head of ophthalmology at cathay hospital physician, in his book "the 3 c eye has been already saved: eye prescription of ophthalmic authorityn", said before answering this problem, we should learn from two to understand. First of all, when nutrients into the intestines and stomach, through lacteal to the liver, so through the intestinal absorption of nutrients and its absorption rate is related to the dosage form. Secondly, the most important transport of lutein is the process of transporting lutein from the liver to the macula after detoxification. Lutein is a lipid soluble substance and its transport tool is high-density lipoprotein (HDL). Therefore, when the body is healthy and the high-density lipoprotein (HDL) in the body increases, lutein can be more effectively transported.
Therefore, there are so many dosage forms of lutein, how to choose? For old people and children, it seems more convenient to drink in liquid form or powdered form with water. As for capsules and lozenges, because the particles are large and a little hard, I am afraid that children and the elderly are not easy to swallow. Although liquids and powders are easily digestible, they disperse too quickly to be excreted and are not used too much. As for soft capsules and lozenges, granular lozenges are more difficult to be digested than soft capsules. However, since they have been in the gastrointestinal tract for a long time and have high stability, they can be digested and absorbed more easily and can improve the utilization rate of human body.