Home Ingredients Asta-Marine® (Marine Astaxanthin)
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Asta-Marine® (Marine Astaxanthin)

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

Asta-Marine® is a marine-source astaxanthin, the red carotenoid antioxidant produced by microalgae and concentrated up the marine food chain. Most of the research cited on this page is about skin: a 2021 review pooling 11 studies of generic astaxanthin reported improvements in skin moisture, elasticity and wrinkle depth. No published study has tested the Asta-Marine brand itself, and the skin review measured no eye or exercise recovery outcome. A small placebo-controlled trial of another astaxanthin brand found lower eye strain scores in children with heavy screen use.

Studied Dose Studies of generic astaxanthin have commonly used 4 to 12 mg per day. There is no published trial of Asta-Marine itself, so no brand specific dose has been tested.
Active Compound Astaxanthin, a red carotenoid antioxidant, typically from Haematococcus pluvialis microalgae.

Benefits

Skin health

This is the benefit with the broadest cited support. A 2021 review pooled 11 astaxanthin studies in adults (9 randomized controlled trials and 2 uncontrolled open-label studies) and reported improvements in skin moisture, elasticity and wrinkle depth. Those studies used generic astaxanthin, not Asta-Marine.

Supported by Trial 1

Antioxidant power

Astaxanthin is a red carotenoid that behaves as an antioxidant in laboratory testing. The skin review cited on this page measured skin moisture, elasticity and wrinkle depth, and the screen-use trials measured eye symptoms and acuity, not antioxidant levels in the body, cell protection, eye protection or UV protection, so those specific effects are not shown by the research cited here.

Supported by Trial 1

Muscle and exercise recovery claims: untested here

No research is cited on this page for exercise recovery. None of the studies cited here measured any muscle or exercise outcome. Treat this use as untested here.

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. Asta-Marine itself was not tested.

Supported by Trial 1

Mechanism of action

1

Singlet-oxygen quenching

In laboratory testing, astaxanthin's structure lets it sit across cell membranes and neutralize singlet oxygen and free radicals. This is test tube chemistry. It has not been shown to translate into a measured health effect in the human research cited on this page.

2

Anti-inflammatory action

Researchers propose that astaxanthin lowers oxidative stress and in turn quiets inflammatory signaling in tissues such as skin. This is a proposed explanation drawn from laboratory work, not something the cited human review measured.

Clinical trials

1
Astaxanthin and Skin Ageing: Review of 11 Studies (Skin Outcomes Only)
PubMed

Systematic review and meta-analysis of generic astaxanthin, not Asta-Marine, on human skin ageing. It pooled 11 studies: 9 randomized controlled trials and 2 uncontrolled open-label studies. (Zhou et al. 2021, Nutrients)

Adults across 11 pooled studies. Every study used generic astaxanthin supplements; none tested Asta-Marine.

Astaxanthin was linked to improvements in skin moisture, elasticity and wrinkle depth. Skin was the only thing measured: there is no eye, vision, muscle or exercise recovery outcome anywhere in this review. Two of the 11 pooled studies had no control group, so their results cannot be separated from normal variation.

Side effects and drug interactions

Common Potential side effects

Generally well tolerated in the studies done so far, with side effects reported infrequently.
High doses can give a slight reddish skin tint (harmless).
Mild digestive upset is occasionally reported.

Important Drug interactions

Blood thinners: a mild additive blood thinning effect has been suggested, so check with your doctor before combining.
No other interactions have been established, though astaxanthin has not been widely tested alongside medications.
Tell your doctor if pregnant or breastfeeding.

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Frequently asked questions about Asta-Marine® (Marine Astaxanthin)

What is Asta-Marine?

Asta-Marine® is a marine-source astaxanthin, the red carotenoid antioxidant produced by microalgae and concentrated up the marine food chain. Most of the research cited on this page is about skin: a 2021 review pooling 11 studies of generic astaxanthin reported improvements in skin moisture, elasticity and wrinkle dept…

What is Asta-Marine used for?

Asta-Marine is researched primarily for Antioxidant, Hair, Skin & Nails, and Eye Health. This is the benefit with the broadest cited support. A 2021 review pooled 11 astaxanthin studies in adults (9 randomized controlled trials and 2 uncontrolled open-label studies) and reported improvements in skin moisture, elasticity and wri…

What is the recommended dosage of Asta-Marine?

The clinically studied dose is Studies of generic astaxanthin have commonly used 4 to 12 mg per day. There is no published trial of Asta-Marine itself, so no brand specific dose has been tested. Always follow the product label and check with a healthcare provider for personal advice.

Is Asta-Marine safe, and does it have side effects?

Side effects and cautions reported for Asta-Marine include: Generally well tolerated in the studies done so far, with side effects reported infrequently. High doses can give a slight reddish skin tint (harmless). It may also interact with some medications. Asta-Marine 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 Asta-Marine interact with any medications?

Possible interactions include: Blood thinners: a mild additive blood thinning effect has been suggested, so check with your doctor before combining. No other interactions have been established, though astaxanthin has not been widely tested alongside medications. If you take prescription medication, check with a pharmacist or doctor before using it.

How strong is the scientific evidence for Asta-Marine?

NutraSmarts rates the evidence for Asta-Marine 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 generic astaxanthin reporting improvements in skin moisture, elasticity and wrinkle depth. It measured no antioxidant, eye or exercise outcome, and it did not test the Asta-Marine brand.
  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 Asta-Marine.
  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 Asta-Marine.