Astaxanthin
Commonly used for
Healthy AgingAthletic PerformanceEnergy
Where to Buy
Our experts personally review each product we recommend for quality and cost effectiveness.
The cheapest product is usually low quality, but more expensive doesn’t always mean better.
The cheapest product is usually low quality, but more expensive doesn’t always mean better.
What is it? / Overview
Astaxanthin is a carotenoid with potent antioxidant activity that accumulates in cell membranes and the retina. Human studies suggest modest benefits for skin elasticity, eye fatigue, and exercise recovery though evidence for athletic performance enhancement remains mixed.
How is it used? / Administration
Form: Natural astaxanthin from Haematococcus pluvialis
Typical dose studied: 4–12 mg/day
Timing: With fat-containing meal
Natural astaxanthin has substantially more evidence than synthetic forms. Best absorbed with dietary fat.
How well does it work? / Evidence
? Emerging / limited evidence
Who should avoid it?
Interacts with: Antihypertensive or glucose-lowering medications — monitor for small additive effects
Already taking it? Choose naturally sourced products standardized for astaxanthin content.
Research & references
Ambati RR et al. (2014). Astaxanthin: sources, stability, biological activities. Marine Drugs. Donoso A et al. (2021). Therapeutic uses of astaxanthin systematic review. Marine Drugs. Ito N et al. (2018). Astaxanthin and cognitive and visual function RCT. Journal of Clinical Biochemistry and Nutrition.
Disclosure: Knozela is a participant in the Amazon Associates affiliate program. Some "Where to buy" links on this page are affiliate links -- if you make a purchase through them, Knozela may earn a commission at no additional cost to you.