Nootropic profile
Astaxanthin
Astaxanthin is a potent carotenoid antioxidant derived from microalgae that is 6,000 times stronger than vitamin C. It crosses the blood-brain barrier to protect neurons from oxidative damage, supports brain circulation, and shows promise for age-related cognitive preservation.
Best for
Educational only: this is not medical advice. Always check with a qualified healthcare professional before starting any supplement.
What is Astaxanthin?
Astaxanthin is a naturally occurring keto-carotenoid pigment produced by the microalga Haematococcus pluvialis. It is responsible for the distinctive red-pink colour of salmon, shrimp, lobster, and flamingos.
What it does for you
Community and editorial ratings, out of 5:
How to take it
- Typical dose: 4–12 mg per day
- For general brain health: 4–8 mg daily
- For cognitive support: 8–12 mg daily
- Must take with fat: Astaxanthin is fat-soluble - take with a meal containing dietary fat for proper absorption
- Accumulation: Effects build over time; consistent supplementation for 4–8 weeks is typically needed for noticeable benefits
Watch out for
- Side effects: Very well-tolerated. Possible mild GI discomfort or reddish stool colour (harmless pigment effect).
- No pro-oxidant risk: Unlike beta-carotene and vitamin E, astaxanthin does not become pro-oxidant at any dose - a unique safety advantage.
- Drug interactions: May enhance the effects of blood pressure medications due to mild hypotensive properties.
- Autoimmune conditions: Theoretical concern about immune stimulation - use with caution in autoimmune conditions.
- Pregnancy: Insufficient data for supplemental doses - consult a healthcare provider.
The science, if you're curious.
- Spans the entire cell membrane bilayer (unlike most antioxidants that only work on one side), providing comprehensive protection against lipid peroxidation...
- Crosses the blood-brain barrier to directly neutralise free radicals in neural tissue, protecting against excitotoxicity and mitochondrial dysfunction.
- Inhibits NF-kB activation and reduces pro-inflammatory cytokines (TNF-α, IL-6, IL-1β) in brain tissue.
- Protects mitochondrial membranes from oxidative damage, maintaining efficient energy production in neurons.
Where to find it
- Microalgae: Haematococcus pluvialis is the richest natural source and the primary commercial source
- Seafood: Wild salmon (3–4 mg per serving), shrimp, krill, crab, and lobster contain natural astaxanthin
- Supplements: Available as softgels and capsules. Natural (from algae) is preferred over synthetic. Often combined with krill oil.
Frequently asked
Astaxanthin is a potent carotenoid antioxidant derived from microalgae that is 6,000 times stronger than vitamin C. It crosses the blood-brain barrier to protect neurons from oxidative damage, supports brain circulation, and shows promise for age-related cognitive preservation.
The main benefits people report from Astaxanthin are: Cognitive Enhancement, Energy, Focus, Longevity, Memory, Mood.
Typical dose: 4–12 mg per dayFor general brain health: 4–8 mg dailyFor cognitive support: 8–12 mg dailyMust take with fat: Astaxanthin is fat-soluble - take with a meal containing dietary fat for proper absorptionAccumulation: Effects build over time; consistent supplementation for 4–8 weeks is typi...
Side effects: Very well-tolerated. Possible mild GI discomfort or reddish stool colour (harmless pigment effect).No pro-oxidant risk: Unlike beta-carotene and vitamin E, astaxanthin does not become pro-oxidant at any dose - a unique safety advantage.Drug interactions: May enhance the effects of bloo...
Spans the entire cell membrane bilayer (unlike most antioxidants that only work on one side), providing comprehensive protection against lipid peroxidation...Crosses the blood-brain barrier to directly neutralise free radicals in neural tissue, protecting against excitotoxicity and mitochondrial dys...
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