Purified lutein, such as FloraGLO®, used in ScienceBased Health products is considered a superior source for the following reasons: 1) lutein is the predominate form in foods, making up 80% while lutein esters makes up only 6%; and 2) lutein may be more easily or readily absorbed than ester forms, because the fatty acids that comprise the "ester" have to be removed by enzymes before absorption can take place. The absorption of lutein from lutein esters is also less efficient when taken with a low-fat meal.