Astaxanthin (Eye Health)
A super-antioxidant that crosses the blood-retinal barrier to combat eye strain and fatigue.
Also known as: Haematococcus pluvialis extract
Overview
Astaxanthin is a potent keto-carotenoid antioxidant found in microalgae, salmon, and krill. It is unique in its ability to cross the blood-retinal and blood-brain barriers, allowing it to exert its powerful antioxidant and anti-inflammatory effects directly in the eye. It is particularly effective at reducing eye fatigue and improving accommodative function.
Key Benefits
Combats Eye Strain
Improves the eye's ability to focus (accommodation) and reduces symptoms of digital eye strain like dryness, blurriness, and fatigue.
Enhances Retinal Blood Flow
Increases blood flow velocity in the capillaries of the retina, improving nutrient delivery and waste removal.
Protects Against Oxidative Stress
As one of nature's most powerful antioxidants, it neutralizes free radicals that can damage retinal cells.
Dosage & How to Take
6-12 mg per day is a typical dose for supporting eye health.
| Purpose | Dose | Notes |
|---|---|---|
| Digital Eye Strain | 6 mg daily | Effective dose for reducing accommodative fatigue. |
| General Antioxidant Support for Eyes | 4-12 mg daily | Higher end of the range provides more robust protection. |
Best Time to Take
Take with a meal containing fat to maximize absorption.
With or Without Food
Yes, it is a fat-soluble carotenoid.
Forms & Bioavailability
| Form | Absorption | Best For | Notes |
|---|---|---|---|
| Natural Astaxanthin (H. pluvialis) | High | Eye health | The most studied and effective form. |
| Synthetic Astaxanthin | Lower | Not recommended | May not have the same biological activity as the natural form. |
Side Effects & Safety
Common
- None reported at standard doses.
Rare
- May impart a slight reddish-orange color to the skin at very high doses.
- May lower blood pressure slightly.
Contraindications
- Use with caution if you have low blood pressure or are on blood pressure-lowering medication.
Interactions
Scientific Research
Astaxanthin on Visual Acuity and Accommodation
Studies have shown that daily supplementation with 6 mg of astaxanthin improves accommodative amplitude and reduces symptoms of eye fatigue.
Food Sources
Frequently Asked Questions
Medical Disclaimer
This content is for educational and informational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen, especially if you have pre-existing health conditions or are taking medications. The statements on this page have not been evaluated by the Food and Drug Administration.