BioStacks
Natural Factors

Vitamin D3 SunVitamin 50 mcg (2000 IU)

1 Softgel · 90 servings

89 / 100Excellent

Score Breakdown

Formulation
89
Safety
100
Final score
89/100

Ingredients (2)

Vitamin D3Synergy2000 IU

Optimal dose · Premium form

Organic Flaxseed OilSynergy200 mg

20% of effective dose · Budget form

Other Ingredients

Fillers, coatings, and additives

1Safe

SoftgelCapsule

Safe

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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.