BioStacks
Natural Factors

Astaxanthin Plus 4 mg

1 Softgel · 60 servings · $0.29/serving

53 / 100Average

Best for

Score Breakdown

Formulation
53
Safety
100
Final score
53/100

Ingredients (3)

Astaxanthin

100%

Dose

4 mg

Target

4–12 mg

Form

Not listed

Lutein

10%

Dose

1 mg

Target

10–20 mg

Form

Zeaxanthin

9%

Dose

0.2 mg

Target

2–4 mg

Form

Other Ingredients (2)

Flaxseed OilCarrier Oil

Flaxseed (linseed) oil, an ALA omega-3 source used as a softgel carrier oil

SoftgelCapsule

One-piece gelatin capsule shell with a plasticizer (typically glycerin), used to encapsulate liquid or oil-based supplements

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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.