Lutein Esters (marigold-derived)
Lutein Esters (marigold-derived) is a tier 1 form of Lutein, used in 784 on-market products .
784
on-market products
tier 1
quality tier
n/a
elemental fraction
Why this tier: A 2024 randomized crossover trial found free and ester forms produced equivalent serum lutein response and equivalent visual-outcome measures over 2 months -- esterification does not meaningfully impair bioavailability once formulation is adequate.
Source: Olmedilla-Alonso B et al. 2024, Nutrients, PMC11123982