Astaxanthin
Content by: OpenSupplement Editorial Team | Medical review: pending | Last updated: April 13, 2026
TL;DR
Red pigment from algae; the most powerful antioxidant in the carotenoid family
High evidence for improving skin quality and reducing eye fatigue
Moderate evidence for heart health and muscle recovery
Unique ability to span the entire cell membrane for 360-degree protection
Excellent safety profile
Moderate cost: ~$15-25/month
Best for: Skin health, eye fatigue, 'full-body' antioxidant support
What it is
Astaxanthin is what makes salmon red and gives them the energy to swim upstream. It is 6,000x stronger than Vitamin C and 550x stronger than Vitamin E. Unlike other antioxidants, it never becomes a 'pro-oxidant' (damaging) in the body.
What the research says
Small trials show astaxanthin improves visual acuity and reduces eye fatigue in healthy adults and those with early eye issues [ref3]. Its ability to cross the blood-retinal barrier makes it theoretically relevant for retinal health [ref1]. Evidence is promising but limited compared to established interventions. [1][3]
Astaxanthin improves the 'quality' of your blood. Evidence. Trials have shown it can lower triglycerides and increase 'good' HDL. It also improves blood flow by keeping the blood vessels 'supple' and reducing oxidative stress in the endothelium. [2]
DISCLAIMER: The information on this page is for educational purposes only and has not been evaluated by the Food and Drug Administration. This content is not intended to diagnose, treat, cure, or prevent any disease. Consult a qualified healthcare professional before using any dietary supplement, especially if you are pregnant, nursing, taking medication, or have a medical condition.
This page may contain affiliate links. If you purchase through these links, we may earn a small commission at no extra cost to you. Learn more.
Astaxanthin on Amazon
Safety
Extremely safe. High doses can cause a harmless reddish tint to the skin.
Interactions
None significant.
Dosing
Standard Dose: 4-12 mg daily. Timing: With a meal.
Cost
Moderate. $15-25 per month.
The bottom line
Astaxanthin is the 'premium' antioxidant. If you want the absolute best protection for your skin and eyes, this is the one.
References
- Fakhri S, Aneva IY, Farzaei MH, Sobarzo-Sánchez E. The neuroprotective effects of astaxanthin: therapeutic targets and clinical perspective. Molecules. 2019;24(14):2640.
- Yoshida H, Yanai H, Ito K, et al. Administration of natural astaxanthin increases serum HDL-cholesterol and adiponectin in subjects with mild hyperlipidemia. Atherosclerosis. 2010;209(2):520-523.
- Nagaki Y, Hayasaka S, Yamada T, et al. Effects of astaxanthin on accommodation, critical flicker fusion, and pattern visual evoked potential in visual display terminal workers. J Tradit Complement Med. 2002;19(5):170-173.
Sources for this page include published meta-analyses, systematic reviews, and NIH dietary supplement fact sheets. All claims reflect the evidence as of early 2026.
This is not medical advice. Consult your healthcare provider before starting any supplement, especially if you take medications.