How much lutein per day: trial doses vs your label
In the trials below, how much lutein per day ranged from 10 to 20 mg. A large eye study (AREDS2) gave 10 mg with 2 mg of zeaxanthin, and two smaller trials gave 12 mg and 20 mg.
Published 19 October 2026 · every study sentence below links to its PubMed record
The short answer
The trials in the table gave between 10 and 20 mg of lutein a day. Check the lutein line on your label against the trial that matches why you take it.
This page shows each trial's dose and what it found, in the paper's own words. It does not grade them.
| Why people take it | Lutein dose in the trial | What the trial found |
|---|---|---|
| Eyes (a late form of macular degeneration, called geographic atrophy) | 10 mg. With 2 mg zeaxanthin. PubMed | Slower spread toward the center of vision. The total damaged area did not grow more slowly. |
| Memory, older adults with macular degeneration | 10 mg. With 2 mg zeaxanthin. PubMed | No significant effect. |
| Memory, healthy adults | 10 mg. For twelve months. PubMed | Can improve. That is the finding of a review of trials. |
| Cell-damage markers (oxidative stress), healthy older adults | 12 mg. PubMed | No change. |
| Inflammation, early artery plaque (atherosclerosis) | 20 mg. PubMed | Lower inflammation markers (IL-6 and MCP-1). |
Each row is one paper. The exact sentences are in the sections below.
What lutein dose did the eye study use?
10 mg of lutein with 2 mg of zeaxanthin, tested alongside other supplements and a placebo:
“The AREDS2 participants were randomly assigned to 10 mg lutein/2 mg zeaxanthin, 350 mg docosahexaenoic acid/650 mg eicosapentaenoic acid, combination, or placebo.”
In AREDS2, among people already taking the study's antioxidant formula without beta-carotene, those randomly given lutein and zeaxanthin had damage spread more slowly toward the center of vision:
“In AREDS2 eyes with noncentral GA, in participants assigned to AREDS antioxidants without β-carotene (n = 325 eyes), proximity-based progression was significantly slower with randomization to lutein/zeaxanthin versus none, at 80.1 μm/year (95% CI, 60.9-99.3 μm/year) versus 114.4 μm/year (95% CI, 96.2-132.7 μm/year; P = 0.011), respectively.”
The total damaged area is a different measure, and on that one the same study found no significant difference:
“In AREDS2 eyes with any GA, in participants assigned to AREDS antioxidants without β-carotene (n = 505 eyes), area-based progression was not significantly different with randomization to lutein/zeaxanthin versus none (P = 0.64).”
Does lutein help memory?
The papers here split. The same eye study tested memory and thinking at the same dose:
“Long-chain polyunsaturated fatty acids (LCPUFAs) (1 g) and/or lutein (10 mg)/zeaxanthin (2 mg) vs placebo were tested in a factorial design.”
“Among older persons with AMD, oral supplementation with LCPUFAs or lutein/zeaxanthin had no statistically significant effect on cognitive function.”
A review of trials in healthy adults reached the other answer at the same daily dose:
“This SR showed that the 10 mg lutein per day for twelve months can lead to improvement of cognitive functions.”
What did trials at 12 mg and 20 mg find?
“Healthy subjects (50-70 years) were randomly assigned to one of two groups (n=20 in each group): (1) a lutein (12 mg/day) supplemented group or (2) a lutein (12 mg/day) plus green tea extract (200 mg/day) supplemented group.”
Blood lutein rose in that trial:
“Plasma lutein, total carotenoids and ascorbic acid concentrations of subjects in either the lutein group or the lutein plus green tea extract group were significantly increased (P<.05) at 4 weeks and throughout the 16-week study period.”
The cell-damage markers it measured did not move:
“However, no significant changes from baseline in any biomarker of overall antioxidant activity or lipid peroxidation of the subjects were seen in either group.”
A second trial gave 20 mg a day to people with early artery plaque:
“Early atherosclerosis patients (n= 65) were randomized to receive placebo (A+P, n= 31) or 20 mg/d lutein (A+L, n= 34) for 3 months.”
“Lutein supplements resulted in a significant decrease in serum interleukin-6 (IL-6) and monocyte chemoattractant protein-1 (MCP-1) at 3 month in A+L group (p<0.05).”
Does lutein need fat to absorb?
Lutein esters are one form you may see on a label. For them, one study found the meal needed more fat than it did for vitamin E and the carotenes:
“Optimal uptake of vitamin E and alpha- and beta-carotene requires a limited amount of fat whereas the amount of fat required for optimal intestinal uptake of lutein esters is higher.”
This page does not diagnose anything and does not tell you what to take. Ask your doctor before you change a supplement.
Common questions
Is more lutein better?
The papers on this page do not test one lutein dose against another, so they cannot answer that. Apart from the study on fat, they gave between 10 and 20 mg a day.
Does lutein need to be taken with food?
The papers here do not test lutein without food. For lutein esters taken with a meal, one study found uptake needed more fat in the meal than vitamin E and the carotenes did.
Keep reading
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- Magnesium glycinate vs citrateform guide
- All biomarkersthe full list