Zeaxanthin

Also known as zeaxanthine.

Last reviewed October 9, 2026 · Jump to references

What is Zeaxanthin?

In plain words

Zeaxanthin is a yellow-orange pigment found in foods such as corn, peppers, and leafy greens. The body absorbs it with dietary fat and concentrates some of it in the retina, the light-sensing layer at the back of the eye. Researchers study its role in protecting vision, especially in age-related macular degeneration, which damages central vision. Much of the clinical evidence involves combinations of nutrients, so benefits cannot be attributed to zeaxanthin alone.

Technical definition

Zeaxanthin is a dietary xanthophyll carotenoid with a 40-carbon conjugated backbone and two hydroxyl groups, produced by plants and certain microorganisms. It accumulates in the retinal macula, where it absorbs short-wavelength visible light and helps limit oxidative damage through photophysical and antioxidant mechanisms rather than a specific receptor target. It is marketed as a dietary supplement, not as an approved drug treatment for eye disease.

Educational information only. This page does not provide medical advice or determine whether a supplement is appropriate for you. Review supplements with a qualified healthcare professional, especially if you take medication, are pregnant, have surgery scheduled, or have a chronic medical condition.

Evidence by use

Each use is rated on its own. There is no single overall effectiveness score.