Evigrade

Astaxanthin

Dietary supplements, carotenoids (local classification)

ATC code: A11JA-ASTAXANTHIN

Brand names: AstaReal Astaxanthin, Solgar Astaxanthin, Now Foods Astaxanthin, BioAstin Hawaiian Astaxanthin

Updated · Methodology

Marketing claims without evidence base

The drug is promoted for these uses outside international guidelines. Each entry below is analyzed against AEMPS, FDA, EMA, Cochrane and major RCTs.

D

Age-related skin changes (wrinkles, elasticity)

Not recommended

Astaxanthin is a natural carotenoid antioxidant from algae, added to supplements and creams and marketed for wrinkles and skin elasticity. Solid benefit for this use hasn't been shown, and the evidence for skin rejuvenation is lacking. For age-related skin changes, the approaches with real support are sun protection, retinoids, and regular moisturizing.

D

Anti-aging and longevity

Not recommended

Astaxanthin is a carotenoid pigment with antioxidant properties, and supplements containing it are marketed for slowing aging and extending lifespan. The benefit for this use hasn't been shown in people: there's no evidence that it affects aging or how long we live. What actually helps skin and longevity is straightforward – sun protection, not smoking, sleep, physical activity and a balanced diet.

D

Digital eye strain (computer vision syndrome)

Not recommended

Astaxanthin is heavily marketed for computer eye strain. The marketing rests on a handful of early-2000s Japanese RCTs (Kajita et al.) with small samples of 20–50 participants, sponsored by AstaReal/Fuji Health Science. The claimed effect: improved accommodation amplitude and lower «fatigue» complaints. The 2022 meta-analysis by Ma in Nutrients pooled 11 RCTs (521 participants) and found a statistically significant but clinically small improvement in eye-strain symptoms; evidence quality is low, heterogeneity high, risk of bias high due to industry sponsorship. No Cochrane review exists. PPP 2023 on dry eye and digital eye strain recommends the 20-20-20 rule, refraction correction, artificial tears and workstation optimisation. Astaxanthin is not in the guideline. If a supplement was prescribed for «tired eyes» without a refraction and tear-film assessment, consider seeking a second opinion.

ICD-10: H53.1 · ICD-11: 9D50

D

Sports recovery

Not recommended

Astaxanthin is a carotenoid antioxidant from the Haematococcus alga, marketed as a supplement to speed up post-workout recovery and ease muscle soreness. Studies have not shown a convincing benefit for this use, and the evidence on recovery or performance is lacking. Sleep, enough protein and a gradual increase in training load do more to help you recover.

How to read tiers A–F
  • AStrong evidence – first or second line in international guidelines
  • BRecommended in selected cases
  • CStudy data contradict each other
  • DBenefit not proven, no documented harm
  • FDocumented harm, or risk without benefit

Mechanism of action

Astaxanthin is a xanthophyll carotenoid produced by the microalga Haematococcus pluvialis. The same pigment colours salmon, shrimp, and flamingos. Laboratory models report astaxanthin antioxidant activity 5–100 times that of other carotenoids on ORAC. In humans, RCTs run 4–12 weeks and assess surrogate oxidative stress markers.

Safety

Contraindications

  • Pregnancy and breastfeeding (data insufficient)
  • Hypersensitivity
  • Age under 12

Serious adverse effects

  • Serious adverse events were not reported in published RCTs

Common adverse effects

  • GI discomfort
  • Carotenosis (pinkish skin discolouration) with long-term high-dose use
  • Blood pressure reduction in patients on antihypertensive therapy

Pregnancy: can you take Astaxanthin?

Pregnancy data are insufficient; supplement is not recommended.

Breastfeeding: can you take Astaxanthin?

Breastfeeding data are insufficient; supplement is not recommended.

Reference information, not a clinical decision. Discuss feeding pauses or changes with your physician or an IBCLC.

Practical notes

Russian practice note

Astaxanthin in Russia is sold as a dietary supplement; marketing doses are 4–12 mg/day, retail 800–2500 ₽/month. The carotenoid is fat-soluble, with bioavailability improving when taken with meals containing fat. Prolonged high-dose use can pinkish discolour palms, soles, and skin (carotenosis). The supplement lowers 5α-reductase in vitro, which underpins marketing claims of «prostate support»; clinical confirmation in RCTs with IPSS endpoints is lacking.

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Frequently asked

What is Astaxanthin used for?

Astaxanthin is evaluated for the following indications with varying evidence strength: Anti-aging and longevity (evidence tier D), Digital eye strain (computer vision syndrome) (evidence tier D), Age-related skin changes (wrinkles, elasticity) (evidence tier D). See the full indication matrix with dosing and citations above on this page.

What are the side effects of Astaxanthin?

Common side effects of Astaxanthin (≥ 1 in 100): GI discomfort, Carotenosis (pinkish skin discolouration) with long-term high-dose use, Blood pressure reduction in patients on antihypertensive therapy. See the Safety section for uncommon and serious reactions.

Is Astaxanthin safe during pregnancy?

Pregnancy data are insufficient; supplement is not recommended.

Is Astaxanthin compatible with breastfeeding?

Breastfeeding data are insufficient; supplement is not recommended.

Who should not take Astaxanthin?

Astaxanthin is contraindicated in: Pregnancy and breastfeeding (data insufficient); Hypersensitivity; Age under 12. Full list in the Safety section.

Other drugs in this group

Bacopa monnieri (brahmi), Beta-carotene, Beta-1,3/1,6-D-glucan (yeast or oat), Bilberry (Vaccinium myrtillus fruit extract), D-chiro-inositol, Monolaurin (glycerol monolaurate), Pumpkin seed oil (Cucurbita pepo, Cucurbita maxima), Sulforaphane (isothiocyanate from broccoli sprouts)