BioStacks
Source Naturals

Astaxanthin 2 mg

1 Tablet × 2/day · 120 servings · $0.29/serving

iHerbAmazon

Best for

Skin

Ingredients (2)

Haematococcus pluvialis microalgae extract

100%

Dose/day

200 mg

Target

4–12 mg

Form

—

Astaxanthin

100%

Dose/day

4 mg

Target

4–12 mg

Form

Not listed

Other Ingredients (4)

Magnesium StearateLubricant

A salt of stearic acid used as a lubricant in tablet and capsule production

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in supplements

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in supplements

Stearic AcidLubricant

Saturated fatty acid used as tablet lubricant

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

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