Bayer One A Day Prenatal supplement bottle
Bayer

One A Day Prenatal

What We Researched
· 20 inactive ingredients decoded · Last updated: Mar 2026
88
Product Score Good

Product Analysis

Transparency Fair

Supplement Facts

No supplement facts data available.

Bioavailability N/A

Absorption Rating

No ingredient forms matched our reference database.

Other Ingredients Excellent

Fillers & Additives

  • Vitamin A (as beta-carotene)
  • Vitamin C
  • Vitamin D
  • Vitamin E
  • Thiamin (B1)
  • Riboflavin (B2)
  • Niacin
  • Folate (as folic acid)
  • Vitamin B12
  • Biotin
  • Pantothenic Acid
  • Calcium
  • Iron
  • Iodine
  • Magnesium
  • Zinc
  • Copper
  • Omega-3 Fatty Acids (from fish oil)
  • DHA (docosahexaenoic acid)
  • EPA (eicosapentaenoic acid)
Efficacy N/A

Dosage Analysis

Dosage data not available for assessment.

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Vitamin A (as beta-carotene) Unknown
Vitamin C Safe

It is added as a source of vitamin C.

Vitamin D Safe
Vitamin E Generally_safe

It is added to supplements as a source of vitamin E.

Thiamin (B1) Unknown
Riboflavin (B2) Unknown
Niacin Generally_safe

It is included for its nutritional value.

Folate (as folic acid) Unknown
Vitamin B12 Safe

It is included for its nutritional value.

Biotin Safe

It is used for its potential benefits related to hair, skin, and nail health.

Pantothenic Acid Safe

It is included as a source of vitamin B5.

Calcium Unknown
Iron Unknown
Iodine Unknown
Magnesium Unknown
Zinc Generally_safe

It is added as a source of zinc.

Copper Unknown
Omega-3 Fatty Acids (from fish oil) Unknown
DHA (docosahexaenoic acid) Unknown
EPA (eicosapentaenoic acid) Unknown
Brand Trust Report
Bayer

Founded 1863 · Leverkusen, North Rhine-Westphalia, Germany · 1 products · bayer.com

Transparency

2 claims
In House Testing — Claimed

Violation History

5 incidents
Lawsuit Misrepresenting the serving size of 'One A Day' gummy vitamins.2025Source
Lawsuit Unsupported claims of 'heart health,' 'immunity support,' and 'energy' benefits for One A Day vitamins.2017Source
Lawsuit False claims about Philip's Colon Health.2015Source
Prop 65 Misleading claims regarding selenium and prostate cancer risk reduction.2010-10-26Source
Fda Warning Marketing of combination drug/dietary supplement products (Bayer Women's Low Dose Aspirin + Calcium and Bayer Aspirin with Heart Advantage) as unapproved new drugs.2008-10-28Source
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Frequently Asked Questions
Is Bayer One A Day Prenatal a good supplement?

Bayer One A Day Prenatal received a product quality score of 88/100 in GoodSupp's independent analysis, indicating strong overall quality. Of the 20 inactive ingredients, 5 are rated safe and 0 are flagged for review.

Is Bayer One A Day Prenatal safe to take?

Bayer One A Day Prenatal has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.