General Dosage
4-12 mg daily with a fat-containing meal
Maximum dose: Up to 24 mg/day has been used safely in short-term studies; 12 mg/day is well-established
Astaxanthin Dosage Guide
Evidence:Moderate
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Dosage Recommendations
General recommendation: 4-12 mg daily with a fat-containing meal
Timing: Take with meals containing fat for optimal absorption • Take with food for best absorption.
Dosage by Condition
General skin protection
4 mg dailyModerate
Wrinkle and elasticity improvement
6-12 mg daily for 12-16 weeksModerate
UV photoprotection
4 mg daily for 9+ weeksModerate
Age spot reduction
4-6 mg daily for 8-10 weeksEmerging
| Condition | Recommended Dose | Evidence |
|---|---|---|
| General skin protection | 4 mg daily | Moderate |
| Wrinkle and elasticity improvement | 6-12 mg daily for 12-16 weeks | Moderate |
| UV photoprotection | 4 mg daily for 9+ weeks | Moderate |
| Age spot reduction | 4-6 mg daily for 8-10 weeks | Emerging |
Upper limit: Up to 24 mg/day has been used safely in short-term studies; 12 mg/day is well-established
Timing & Absorption
Take with meals containing fat for optimal absorption
Best taken with food for optimal absorption.
References
- RCTIto N, Seki S, Ueda F. (2018). The protective role of astaxanthin for UV-induced skin deterioration in healthy people. Nutrients. DOI PubMed
- ObservationalYamashita E. (2006). The effects of a dietary supplement containing astaxanthin on skin condition. Carotenoid Science.
- Babaei Hoolari B, Fatahi Dehpahni M, Amidi F (2026). Effects of astaxanthin supplementation on human sperm quality during the freeze thaw process: a systematic review and meta analysis.. Scientific reports. DOI PubMed
- Rodrigues VD, Boaro BL, Laurindo LF, Chagas EFB, et al. (2025). Exploring the benefits of astaxanthin as a functional food ingredient: Its effects on oxidative stress and reproductive outcomes in women with PCOS - A systematic review and single-arm meta-analysis of randomized clinical trials.. Naunyn-Schmiedeberg's archives of pharmacology. DOI PubMed
- Maleki-Hajiagha A, Shafie A, Maajani K, Amidi F (2024). Effect of astaxanthin supplementation on female fertility and reproductive outcomes: a systematic review and meta-analysis of clinical and animal studies.. Journal of ovarian research. DOI PubMed
- Meta-analysisLiu C, Dong X, Jia J, Ha M (2024). Effects of Astaxanthin Supplementation on Fatigue, Motor Function and Cognition: A Meta-Analysis of Randomized Controlled Trials.. Biological research for nursing. DOI PubMed
- Arefpour H, Rasaei N, Amini MR, Salavatizadeh M, et al. (2024). The effects of astaxanthin supplementation on liver enzyme levels.. International journal for vitamin and nutrition research. Internationale Zeitschrift fur Vitamin- und Ernahrungsforschung. Journal international de vitaminologie et de nutrition. DOI PubMed
Show 3 more references
- Meta-analysisMa B, Lu J, Kang T, Zhu M, et al. (2022). Astaxanthin supplementation mildly reduced oxidative stress and inflammation biomarkers: a systematic review and meta-analysis of randomized controlled trials.. Nutrition research (New York, N.Y.). DOI PubMed
- Leung LY, Chan SM, Tam HL, Wong ES (2022). Astaxanthin Influence on Health Outcomes of Adults at Risk of Metabolic Syndrome: A Systematic Review and Meta-Analysis.. Nutrients. DOI PubMed
- Meta-analysisZhou X, Cao Q, Orfila C, Zhao J, et al. (2021). Systematic Review and Meta-Analysis on the Effects of Astaxanthin on Human Skin Ageing.. Nutrients. DOI PubMed