Safety Profile
Overall safety rating: Generally Safe
Astaxanthin Side Effects & Safety
This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer
Potential Side Effects
- Excellent safety profile — no significant adverse effects in clinical trials
- May cause orange/reddish skin discoloration at very high doses (harmless)
- Mild GI discomfort in rare cases
- Slight reddish tinge to stool (harmless)
Drug & Supplement Interactions
- Blood pressure medications — astaxanthin may modestly lower blood pressure; monitor
- Blood thinners — theoretical antiplatelet activity; use caution with anticoagulants
- Hormone-sensitive conditions — astaxanthin may inhibit 5-alpha reductase; potentially relevant for hormonal conditions
- No significant drug interactions identified in clinical studies
Maximum Dose
Do not exceed: 24mg/day (doses up to 40mg have been used safely in short-term studies)
References
- Naguib YMA (2000). Antioxidant activities of astaxanthin and related carotenoids. Journal of Agricultural and Food Chemistry. DOI PubMed
- Tominaga K, Hongo N, Karato M, Yamashita E (2012). Cosmetic benefits of astaxanthin on humans subjects. Acta Biochimica Polonica. DOI PubMed
- Earnest CP, Lupo M, White KM, Church TS (2011). Effect of astaxanthin on cycling time trial performance. International Journal of Sports Medicine. DOI PubMed