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Astaxanthin

Also known as Algal carotenoid

What it is: Red carotenoid from algae and seafood
What it does: Acts as a potent antioxidant in lipid environments and modulates inflammatory signaling
Status: Widely used supplement
Evidence: Low to Moderate. Emerging human data.
Uses: Eye and skin health; exercise recovery; cardiovascular support

Caution. Generally well tolerated; high doses may cause harmless skin color changes in some.

Summary

Astaxanthin is a red carotenoid found in algae, salmon, and shellfish that acts as a strong antioxidant in lipid environments. It is used for eye and skin health, exercise recovery, and cardiovascular support, with early human data showing improvements in oxidative stress markers and some performance measures. It is fat-soluble and best absorbed with meals containing fat.

Checked Jul 19, 2026.

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This entry summarises published information in plain language. It is not medical advice, a dosing recommendation or a substitute for a qualified healthcare professional. Many peptides are not approved for human use, and legal status varies by country. Check anything you rely on against primary sources.