Carotenoid
Astaxanthin
A potent antioxidant that supports brain health and reduces oxidative stress.
KÖGN Health grades Astaxanthin as B (Moderate evidence) and rates it 3.7 out of 5.
Last reviewed · June 2026
Primary effects
- Neuroprotection
- Reduced oxidative stress
- Improved brain health
How it works
Protects brain cells from oxidative damage and supports long-term cognitive health.
Overview
Astaxanthin is primarily valued for its antioxidant capacity, which is significantly stronger than many other carotenoids. While it does not produce immediate cognitive effects, it plays an important role in long-term brain health and cellular protection. It is often used alongside omega-3 fatty acids to support overall neurological function. Its benefits are preventative and cumulative rather than performance-driven.
The evidence
Astaxanthin is a marine carotenoid and potent antioxidant. A small number of clinical trials and a systematic review suggest possible benefits for memory in older adults, often as part of a combination supplement, and the mechanistic case (antioxidant, anti-inflammatory) is reasonable. Standalone, high-quality cognition trials are still few, so the evidence is best called early and promising.
How to dose it
Cognition and general studies commonly use 6–12 mg/day, taken with a fat-containing meal for absorption.
When to take it
Chronic.
Safety & side effects
Very well tolerated; at higher doses it can give skin a faint orange tint, which is harmless.
Who should avoid it
Few known issues. It may mildly lower blood pressure, so note any additive effect with antihypertensives, and discuss with a clinician if you are pregnant.
References
Related ingredients
Graded entries that target the same cognitive goals.
Categories
Draft — the dose, safety and evidence notes on this entry were prepared from the published literature and are pending editorial and clinical review.
Educational information, not medical advice. The evidence grade is KÖGN’s editorial assessment of published research, not a health claim. Speak to a qualified clinician before changing what you take.