Rankings / Longevity — Supplements
Astaxanthin
Longevity · Carotenoid antioxidant
Tier B+
Bottom line
Read Off Label grades Astaxanthin as B+ (7.1/10) based on moderate evidence, moderate benefit magnitude, and a low-risk safety profile.
Much of the positive trial literature comes from Japan.
Typical use: 4-12 mg/day PO with fat — OTC.
What this is
Much of the positive trial literature comes from Japan. Eye fatigue / accommodative spasm indication is the most-replicated. Popular in aging-eye supplements and general 'super-antioxidant' positioning. Natural (H. pluvialis) preferred over synthetic for supplement use.
Mechanism
Red carotenoid from Haematococcus pluvialis microalgae; crosses BBB and blood-retina barrier; unusually potent antioxidant (Miki 1991 reports ~6000x vitamin C in some assays — context-dependent); anti-inflammatory
Dose & route
4-12 mg/day PO with fat
Citations
- https://pubmed.ncbi.nlm.nih.gov/17867638/
- https://pubmed.ncbi.nlm.nih.gov/21595888/
- https://pmc.ncbi.nlm.nih.gov/articles/PMC6337236/
- https://clinicaltrials.gov/study/NCT04583722
Links go to the source. If a link is dead or you want something re-checked, let me know.
Common questions
- Does Astaxanthin work?
- Read Off Label rates the evidence for Astaxanthin as Moderate and the benefit magnitude as moderate, producing an overall grade of B+ (7.1/10). Much of the positive trial literature comes from Japan.
- Is Astaxanthin safe?
- Astaxanthin has a low risk profile in published human data. Legal status: OTC. This is not medical advice — see the disclaimer.
- What is the typical dose for Astaxanthin?
- 4-12 mg/day PO with fat
- How does Astaxanthin work?
- Red carotenoid from Haematococcus pluvialis microalgae; crosses BBB and blood-retina barrier; unusually potent antioxidant (Miki 1991 reports ~6000x vitamin C in some assays — context-dependent); anti-inflammatory
This is an independent synthesis of published research by a non-clinician. Scores are opinions supported by citations, not prescriptions. See the full disclaimer and methodology for how this score was produced and what it does and doesn't mean.