Home Ingredients AstaSana™ (Natural Astaxanthin)
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AstaSana™ (Natural Astaxanthin)

Evidence Level
Limited
1 Clinical Trial
4 Documented Benefits
2/5 Evidence Score

AstaSana™ is a natural astaxanthin from microalgae, supplying the deep-red carotenoid antioxidant. The main human research cited on this page is a 2021 meta-analysis of generic astaxanthin looking at skin ageing measures such as elasticity, moisture, and wrinkles. A small placebo-controlled trial of another astaxanthin brand also found lower eye strain scores in children with heavy screen use. No trial of AstaSana itself is cited, and nothing cited here measured antioxidant status elsewhere in the body.

Studied Dose Astaxanthin supplements commonly supply 4 to 12 mg per day. The studies cited here used generic or other brands of astaxanthin, so no dose has been tested for AstaSana specifically.
Active Compound Astaxanthin, a red carotenoid antioxidant, typically from Haematococcus pluvialis microalgae.

Benefits

Skin health

A 2021 systematic review and meta-analysis of human trials found that astaxanthin supplements improved skin elasticity and moisture and reduced wrinkle measures compared with control. Those trials used generic astaxanthin, not AstaSana, so the result belongs to the compound rather than to this specific branded ingredient.

Supported by Trial 1

Antioxidant activity

Astaxanthin is a carotenoid that neutralizes free radicals in laboratory tests. The human evidence cited on this page measured skin ageing and screen-related eye outcomes, not antioxidant status, so protection of eyes or of cells elsewhere in the body is not something the research listed here demonstrates.

Supported by Trial 1

Exercise support: not shown in cited research

Astaxanthin is often marketed for exercise recovery, but no study cited on this page looked at it. Until exercise data specific to this ingredient are available, treat that use as unproven.

Supported by Trial 1

Eye comfort with screen use, studied in children

In one placebo-controlled trial, 64 children aged 10 to 14 with at least 4 hours of daily screen time took 4 mg of another brand's astaxanthin daily for 84 days. Eye strain questionnaire scores improved about 20 percent more than with placebo and visual fatigue scores were lower; visual acuity did not differ. Most authors worked for the maker. A 9 mg trial in 60 adults found no overall difference. AstaSana itself was not tested.

Supported by Trial 1

Mechanism of action

1

Singlet-oxygen quenching

In laboratory tests, astaxanthin's structure lets it sit across cell membranes and quench singlet oxygen and other free radicals. This is a test tube observation, and it has not been shown to be the reason for any measured effect in people.

2

Anti-inflammatory action

Researchers propose that by lowering oxidative stress astaxanthin may quiet inflammatory signaling. This remains a proposed explanation rather than something demonstrated in the human research cited on this page.

Clinical trials

1
Generic Astaxanthin and Skin Ageing: Meta-Analysis
PubMed

Systematic review and meta-analysis of published human trials of generic astaxanthin and skin ageing. It is a pooled analysis of other researchers' trials, not a new trial, and no AstaSana branded product was tested in it. (Zhou et al. 2021, Nutrients)

Adults pooled from several previously published trials of generic astaxanthin supplements.

Pooled results showed improvements in skin elasticity and moisture and reductions in wrinkle measures compared with control. The review covered skin outcomes only. It did not examine eye health, exercise recovery, or antioxidant status elsewhere in the body, and it did not test AstaSana.

Side effects and drug interactions

Common Potential side effects

Generally well tolerated in published astaxanthin studies, with side effects reported only occasionally.
High doses can give a slight reddish skin tint (harmless).
Mild digestive upset is occasionally reported.

Important Drug interactions

Blood thinners and antiplatelet medicines: a mild additive effect is possible, so check with your doctor first.
Interaction research on astaxanthin is limited, so tell your doctor or pharmacist about any supplement you take alongside prescription medicines.
Tell your doctor if pregnant or breastfeeding.

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Frequently asked questions about AstaSana™ (Natural Astaxanthin)

What is AstaSana?

AstaSana™ is a natural astaxanthin from microalgae, supplying the deep-red carotenoid antioxidant. The main human research cited on this page is a 2021 meta-analysis of generic astaxanthin looking at skin ageing measures such as elasticity, moisture, and wrinkles.

What is AstaSana used for?

AstaSana is researched primarily for Antioxidant, Hair, Skin & Nails, and Eye Health. A 2021 systematic review and meta-analysis of human trials found that astaxanthin supplements improved skin elasticity and moisture and reduced wrinkle measures compared with control.

What is the recommended dosage of AstaSana?

The clinically studied dose is Astaxanthin supplements commonly supply 4 to 12 mg per day. The studies cited here used generic or other brands of astaxanthin, so no dose has been tested for AstaSana specifically. Always follow the product label and check with a healthcare provider for personal advice.

Is AstaSana safe, and does it have side effects?

Side effects and cautions reported for AstaSana include: Generally well tolerated in published astaxanthin studies, with side effects reported only occasionally. High doses can give a slight reddish skin tint (harmless). It may also interact with some medications. AstaSana is not right for everyone, so check with a healthcare provider first if you are pregnant or breastfeeding, have a medical condition, or take prescription medication.

Does AstaSana interact with any medications?

Possible interactions include: Blood thinners and antiplatelet medicines: a mild additive effect is possible, so check with your doctor first. Interaction research on astaxanthin is limited, so tell your doctor or pharmacist about any supplement you take alongside prescription medicines. If you take prescription medication, check with a pharmacist or doctor before using it.

How strong is the scientific evidence for AstaSana?

NutraSmarts rates the evidence for AstaSana as Limited (2 out of 5). It is backed by 1 study summary and 3 cited references summarized on this page. A higher rating reflects more, larger, and better-designed human studies.

References(3 citations)

Evidence ratings on NutraSmarts are based on the totality of human clinical research, with emphasis on randomized controlled trials, meta-analyses, and systematic reviews. The references below directly support claims made throughout this page.

  1. Zhou X, Cao Q, Orfila C, et al. Systematic Review and Meta-Analysis on the Effects of Astaxanthin on Human Skin Ageing. Nutrients. 2021;13(9)..PubMedUsed to support: Meta-analysis of human trials of generic astaxanthin, covering skin ageing outcomes only (elasticity, moisture, wrinkles). It does not address eye health, exercise recovery, or whole-body antioxidant status, and it did not test the AstaSana branded ingredient.
  2. Hecht KA, Marwah M, Wood V, Nishida Y, Bach AE, Gerson J, Hom MM, Schnackenberg J, Raote S, Srivastava S, Negi P, Caston E. Astaxanthin (AstaReal(®)) Improved Acute and Chronic Digital Eye Strain in Children: A Randomized Double-Blind Placebo-Controlled Trial. Adv Ther. 2025;42(4):1811-1833..PubMedUsed to support: Randomized, double-blind, placebo-controlled trial in 64 children aged 10 to 14 with at least 4 hours of daily screen time: 4 mg/day astaxanthin (AstaReal soft capsule) for 84 days improved computer vision syndrome questionnaire scores (about 20 percent between-group difference) and visual fatigue scores versus placebo, with no between-group difference in visual acuity. Most authors were employed by Fuji Chemical Industries or its AstaReal subsidiaries. It did not test AstaSana.
  3. Sekikawa T, Kizawa Y, Li Y, Miura N. Effects of diet containing astaxanthin on visual function in healthy individuals: a randomized, double-blind, placebo-controlled, parallel study. J Clin Biochem Nutr. 2023;72(1):74-81..PubMedUsed to support: Randomized, double-blind, placebo-controlled trial in 60 healthy adults (59 analyzed): 9 mg/day Haematococcus astaxanthin for 6 weeks showed no difference from placebo in any measurement across the whole group; only a stratified subgroup aged 40 and over showed better preserved visual acuity after screen work. Sponsored by the capsule supplier, BGG Japan. It did not test AstaSana.