Astaxanthin
Antioxidant
Also known as: Haematococcus pluvialis, Natural astaxanthin, Red algae extract, Astaxanthin (eye), Astaxanthin
B
Grade B💊 4-12 mg daily🎯 12 primary uses🔗 2 synergies⚠️ Review warnings
Levels upHeart & Longevity+50 pts
Overview
Astaxanthin is a carotenoid with potent antioxidant and anti-inflammatory properties, naturally present in krill and microalgae. It crosses the blood–brain barrier and may support eye, skin, and cellular health.
Primary Uses
Eye healthSkin protectionEnduranceAnti-inflammatoryEye fatigueRetinal protectionEye strainCirculationUV protectionSkin elasticitySkin agingWrinkles
Frequently Asked About Astaxanthin
How much Astaxanthin should I take?
The typical effective range is 4-12 mg daily. Individual needs vary based on age, body weight, diet, and goals — start at the lower end and adjust based on response. Always consult a healthcare provider before starting a new supplement.
When is the best time to take Astaxanthin?
With fat-containing meal. Consistency matters more than perfect timing — pick a daily anchor (e.g. with breakfast or before bed) and stick with it.
Should I take Astaxanthin with food?
Yes.
Does Astaxanthin interact with medications?
Yes — known interactions include None significant. If you take any prescription medication, talk to your doctor or pharmacist before starting Astaxanthin.
What does Astaxanthin pair well with?
Astaxanthin stacks well with Lutein/zeaxanthin and Omega-3s — these combinations either improve absorption or work synergistically toward common goals.
Who should not take Astaxanthin?
Astaxanthin should be avoided or used with caution by people with None. Pregnant or breastfeeding women should consult a healthcare provider before use.
What are the side effects of Astaxanthin?
Most people tolerate Astaxanthin well. The most commonly reported side effects are Red/orange stool (harmless). Side effects are usually dose-dependent — lowering the dose often resolves them.
Dosage
Typical range
4-12 mg daily
Timing
With fat-containing meal
With food
Yes
Duration
Safe long-term
Special Populations
Eye health, outdoor athletes, skin aging
Research & Studies
Search the literature now
We haven’t curated landmark studies for Astaxanthinyet — one-click into the primary literature here. PubMed (RCTs) is usually the highest-signal starting point.
Mechanism of Action
- • 6000x stronger than vitamin C
- • Crosses blood-brain and blood-retinal barriers
- • Protects from UV damage
Evidence Quality
Evidence Grade B
Exceptionally potent antioxidant
Safety & Contraindications
Serious Warnings
- • None
Contraindications
- • None
Common Side Effects
- • Red/orange stool (harmless)
Pregnancy & Breastfeeding
Consult healthcare provider
Liver & Kidney Notes
Safe
Interactions
💊 Medications
- • None significant
🧪 Supplements
- • Works with other carotenoids
🍽️ Food & Alcohol
- • No interactions
Stacking & Synergies
Pairs Well With
Avoid Combining With
None
Best Goal Synergies
Eye healthSkinEndurance
Buying Guide
What to Look For
- • Natural not synthetic
- • Algae-derived
Standardization Markers
Natural from algaemg content
Adulteration risk
Low
Practical Notes
- • Most potent carotenoid
- • Natural preferred over synthetic
- • Only carotenoid that crosses blood-retinal barrier
- • Good for screen fatigue
- • Natural algae-derived preferred
- • Works from inside out
- • Natural source preferred
- • One of strongest antioxidants
Tags
antioxidantcarotenoideye healthskinprotectionpotentanti-agingsun protectionmulti-systemanti-inflammatoryneuroprotective
Top Products with Astaxanthin
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In-depth guides covering Astaxanthin — protocols, comparisons, and use cases.
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Last reviewed: September 2026 by the Formulate Research Team. Sources cited above; methodology and scoring criteria published here.
Cite this page
Formulate Research Team. (2026, September). Astaxanthin — Evidence-Based Supplement Guide. Formulate Supplement Encyclopedia. https://app.formulate-health.app/learning/supplements/astaxanthin
Educational content based on published research and our scoring methodology. Not medical advice — consult a qualified healthcare provider before starting, stopping, or changing supplements, especially if you take medications, are pregnant, or have a medical condition.