← All supplements
Moderate evidenceEye health

Meso-Zeaxanthin

The third macular carotenoid, concentrated at the very centre of the fovea. Supplementing it reliably raises macular pigment density, but whether adding it to lutein and zeaxanthin improves actual vision remains unsettled.

Where to buy

View on iHerb

Ships to 180+ countries · welcome discount for new customers

Referral link — this site may earn a commission on purchases.

What the science says

  • Raises macular pigment optical density Moderate evidence

    A meta-analysis of supplementation trials found that lutein, zeaxanthin and meso-zeaxanthin all increase macular pigment optical density in a dose-related way. A larger systematic review and meta-analysis of lutein/zeaxanthin intake confirmed the pigment response is consistent across studies.

  • Improvement in visual function Limited evidence

    A head-to-head randomised clinical trial in non-advanced age-related macular degeneration compared formulations with and without meso-zeaxanthin and found only limited differences in visual function outcomes despite pigment increases. Contrast sensitivity gains reported in some trials are small and inconsistently replicated.

  • Slowing age-related macular degeneration Limited evidence

    The large AREDS2 trial that established carotenoid supplementation for AMD progression used lutein and zeaxanthin, not meso-zeaxanthin. No comparably sized outcome trial has tested whether adding meso-zeaxanthin changes disease progression.

Dosage & safety

Studied doseTrials typically used 10 mg meso-zeaxanthin alongside 10 mg lutein and 2 mg zeaxanthin daily, taken with a fat-containing meal for absorption. Pigment changes take 3–6 months to develop.
SafetyWell tolerated in trials lasting up to three years, with skin yellowing the main cosmetic effect at high doses. Smokers should specifically avoid beta-carotene-containing eye formulas because of increased lung cancer risk, though this does not apply to the macular carotenoids themselves. Data in pregnancy are limited. Meso-zeaxanthin is barely present in the diet, so supplements are the only meaningful source.

How to take it

TimingOnce daily with your largest meal; time of day is irrelevant, but the meal is not.
With food?Always with a meal containing fat - these are fat-soluble carotenoids and absorption is poor without it.
Worth knowingMeasurable macular pigment change takes 3-6 months, so a three-week trial tells you nothing; skin yellowing at high doses is cosmetic and reverses.

Interactions

With medications

  • orlistat

    Orlistat blocks fat absorption and with it the absorption of carotenoids like meso-zeaxanthin. separate by at least 2 hours, or accept that the supplement will do little while you take it

  • cholestyramine and other bile acid sequestrants

    They bind fat-soluble nutrients in the gut and reduce carotenoid uptake. separate by at least 4 hours

With other supplements

  • beta-carotene supplements

    Beta-carotene competes with lutein and zeaxanthin for the same absorption pathway and lowers their blood levels. avoid high-dose beta-carotene alongside macular carotenoids - and if you smoke, avoid beta-carotene formulas altogether because of the lung cancer signal

Well-established interactions only — this is not a complete list. Always tell your doctor and pharmacist what you take.

Frequently asked questions

Does meso-zeaxanthin improve vision?

Not clearly. Meso-zeaxanthin reliably raises macular pigment density, with moderate evidence, but a head-to-head trial in early AMD found only limited differences in visual function, so the evidence for better vision is limited.

Should AREDS2 include meso-zeaxanthin?

There is no outcome evidence for adding it: AREDS2 used lutein and zeaxanthin, and no comparably large trial has tested whether adding meso-zeaxanthin changes AMD progression.

How much meso-zeaxanthin should I take?

Trials typically used 10 mg meso-zeaxanthin with 10 mg lutein and 2 mg zeaxanthin daily, taken with a meal containing fat. Macular pigment changes take 3-6 months to develop.

Does meso-zeaxanthin have side effects?

Meso-zeaxanthin was well tolerated in trials lasting up to three years, with harmless, reversible skin yellowing at high doses the main effect. Orlistat and bile acid sequestrants reduce its absorption.

Scientific references

Related in Eye health