Forms Comparison
| Form | Bioavailability | Best For |
|---|---|---|
| Free-form Zeaxanthin | High | Direct supplementation — no conversion required |
| Zeaxanthin from Marigold Extract | High | Natural source — the most common commercial form, often paired with lutein |
Types of Zeaxanthin: Forms & Bioavailability
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Free-form Zeaxanthin
Bioavailability: High. Best for: Direct supplementation — no conversion required.
Zeaxanthin from Marigold Extract
Bioavailability: High. Best for: Natural source — the most common commercial form, often paired with lutein.
References
- Age-Related Eye Disease Study 2 Research Group (2013). Lutein + zeaxanthin and omega-3 fatty acids for age-related macular degeneration: the Age-Related Eye Disease Study 2 (AREDS2) randomized clinical trial. JAMA. DOI PubMed
- Bone RA, Landrum JT, Mayne ST, et al. (2001). Macular pigment in donor eyes with and without AMD: a case-control study. Investigative Ophthalmology & Visual Science. PubMed