BioAstin Hawaiian Astaxanthin 4mg
Best for: the 4 mg option ranked in the astaxanthin guide
Astaxanthin Dose Calculator
Choose a skin or general/eye context to compare amounts tested in human studies. Astaxanthin dosing here is not weight-based.
How to read your result
- Start with Your dose and How to split; this is a comparison point, not a prescription.
- Check the Evidence range / upper limit and safety cautions.
- Weight, age and sex are not dose inputs unless the result explicitly says they are.
Estimate
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Your dose
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How to split
See your serving pattern
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Evidence range / upper limit
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Action
Review the safety notes
Is this based on your weight? Enter a valid weight to see whether this estimate uses it.
Evidence grade C
Medication & safety cautions
- Astaxanthin may lower blood pressure; use caution if you take blood-pressure medicine.
- A possible interaction with blood thinners is theoretical; ask your prescriber or pharmacist.
How this estimate works
Skin goal: 12 mg once daily with a meal containing fat. General/eye goal: 6 mg once daily with a meal containing fat. Human trials have tested 4–12 mg/day. EFSA's ADI is 0.034 mg/kg/day (about 2.4 mg/day for a 70 kg adult), so the trial amounts shown are above that reference and are not a general safety recommendation. The calculator's next-step period is 8–12 weeks, not a promise of benefit.
Key studies
- Zhou et al. 2021 — Nutrients · systematic review and meta-analysis on human skin ageing
- Tominaga et al. 2012 — Acta Biochimica Polonica · human cosmetic-benefit study
- Brendler & Williamson 2019 — Phytotherapy Research · safety review
- EFSA 2018 — Call for data summarizing the astaxanthin ADI established in 2014
Astaxanthin buying guide · Intervention evidence
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Sports Research Astaxanthin 12mg
Best for: a 12 mg option listed in the guide
Doctor's Best Natural Astaxanthin 6mg
Best for: a 6 mg option listed in the guide
Frequently asked questions
Is astaxanthin dose based on body weight?
No. The amounts shown are fixed daily amounts used in studies.
How long should I wait before judging an effect?
Skin studies typically ran for several weeks. This calculator suggests an 8–12 week review, not a guaranteed result.
Can I use astaxanthin while pregnant or breastfeeding?
Pregnancy and breastfeeding safety data are not established; this calculator does not provide a dose.
Educational tool, not medical advice. Check with your doctor, especially if you take medication.