Prenatal 1

Prenatal 1

Bayer One A Day Women's4.5 (11,052 ratings)
Format:Softgel Quantity: 30 Softgel(s) · 30 servings
Goals
$12.23 $0.40 per serving

Product analysis

47 out of 100

Prenatal 1 supplies iron, folate and B vitamins that support normal blood formation and use of food for energy. Most forms are unclear in the main declarations, making the nutrient sources harder to compare.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality23

A few sources are clearly named in the main declarations, while many others are less clear. Fish oil identifies the omega-3 source without establishing the form that determines its absorption potential.

Ingredient Transparency69

All declared ingredient amounts are listed, which helps you check the serving. Most nutrient forms are omitted from the main declarations, leaving less clarity about their sources.

Value For Money45

Value varies considerably across the nutrients. Vitamin E and iodine offer better value at the serving cost, while vitamin D, niacin, folate and omega-3s are relatively costly for their contributions.

Customer Satisfaction86

Customer feedback is favorable across 11,052 ratings. The large review base provides useful satisfaction context without establishing prenatal outcomes.

Product Focus33

The clearest role is broad nutritional support for normal blood formation, metabolism and immune function. The usefulness depends on nutritional needs, and these roles alone do not establish prenatal outcomes.

Format
Softgel
Container
30 Softgel(s)
Per serving
$0.40
Customer rating
4.5 · 11,052 ratings
Report analysis

Goals

Everyday Health
Impact
Highest effect
B Ingredient FitB+ PathwaysB+ EvidenceA+ Formulation Logic
Folate · 800 mcgVitamin B12 · 8 mcgVitamin D · 400 IUMagnesium · 50 mgZinc · 15 mgVitamin C · 60 mg
Study evidence
Folate Supportive 80 studies
Magnesium Supportive 114 studies
Vitamin C Supportive 56 studies
Vitamin D Supportive 115 studies
Zinc Supportive 60 studies
Hair Health
Impact
Moderate effect
C+ Ingredient FitF PathwaysA+ EvidenceA Formulation Logic
Biotin · 300 mcgVitamin D · 400 IUZinc · 15 mgIron · 28 mgVitamin C · 60 mg
Study evidence
Biotin Supportive 4 studies
Copper Adverse 4 studies
Folate Mixed 15 studies
Iodine No effect 1 study
Iron Disputed 25 studies
Niacin Disputed 2 studies
Omega-3 Adverse 4 studies
Vitamin A Disputed 13 studies
Vitamin D Disputed 34 studies
Vitamin E No effect 3 studies
Zinc Supportive 22 studies
Impact
Moderate effect
C Ingredient FitF PathwaysA+ EvidenceA+ Formulation Logic
Iodine · 150 mcgVitamin D · 400 IUVitamin B5 · 10 mgMagnesium · 50 mgRiboflavin · 2 mgThiamin · 1.7 mgVitamin B12 · 8 mcgIron · 28 mg
Study evidence
Iodine Adverse 3 studies
Iron Supportive 74 studies
Magnesium Supportive 4 studies
Thiamin Disputed 12 studies
Vitamin D Supportive 32 studies
Impact
High effect
D+ Ingredient FitC- PathwaysA- EvidenceA Formulation Logic
Zinc · 15 mgVitamin C · 60 mgCopper · 2 mgVitamin E · 30 IUOmega-3 · 235 mg
Study evidence
Biotin Supportive 10 studies
Copper Supportive 16 studies
Niacin Supportive 61 studies
Omega-3 Supportive 35 studies
Vitamin A Supportive 106 studies
Vitamin C Supportive 53 studies
Vitamin E Supportive 38 studies
Zinc Supportive 66 studies
Immunity
Impact
High effect
D+ Ingredient FitD- PathwaysA+ EvidenceA Formulation Logic
Magnesium · 50 mgVitamin C · 60 mgZinc · 15 mgVitamin A · 4000 IUVitamin D · 400 IUOmega-3 · 235 mg
Study evidence
Iron Supportive 23 studies
Magnesium Supportive 8 studies
Omega-3 Supportive 24 studies
Vitamin A Supportive 107 studies
Vitamin C Supportive 53 studies
Vitamin D Supportive 85 studies
Vitamin E Supportive 21 studies
Zinc Supportive 73 studies
Bone Health
Impact
High effect
C- Ingredient FitC PathwaysA+ EvidenceA- Formulation Logic
Magnesium · 50 mgCalcium · 200 mgVitamin D · 400 IUCopper · 2 mgZinc · 15 mgVitamin C · 60 mg
Study evidence
Calcium Supportive 144 studies
Copper Disputed 20 studies
Folate Supportive 50 studies
Magnesium Supportive 48 studies
Omega-3 Supportive 32 studies
Vitamin A Adverse 56 studies
Vitamin C Supportive 46 studies
Vitamin D Supportive 202 studies
Zinc Supportive 33 studies

Ingredients

IngredientAmount per servingScore
Calories
10 Calorie(s)
Total Fat
0.5 Gram(s)
Cholesterol
25 mg
Vitamin A (Beta-Carotene)
4000 IU 55
Vitamin C
60 mg
Vitamin D
400 IU 51
Vitamin E
30 IU 65
Thiamine
1.7 mg
Riboflavin
2 mg
Niacin
20 mg 65
Vitamin B6
2.5 mg
Folic Acid
800 mcg 32
Vitamin B12
8 mcg
Biotin
300 mcg 56
Pantothenic Acid
10 mg
Calcium
200 mg
Iron
28 mg 51
Iodine
150 mcg 84
Magnesium
50 mg
Zinc
15 mg 54
Copper
2 mg 50
Sodium
15 mg
Omega-3 Fatty Acids (Fish Oil)
235 mg 42
Pregnant Women 18–50
Report overview
D- Active Ingredient Quality & BioavailabilityB- Dose, Safety & Label TransparencyD+ Value
A serving provides 4,000 IU of vitamin A at a fairly high cost per 5,000 IU. It combines beta-carotene with retinyl palmitate, a preformed form of vitamin A. The vitamin A row names beta-carotene; retinyl palmitate appears only under Other Ingredients. The source split is not fully declared on the vitamin A row.
How this ingredient is rated

Active Ingredient Quality & Bioavailability40

It combines beta-carotene with retinyl palmitate, a preformed form of vitamin A.
Vitamin A Chemical Form & Source
It combines beta-carotene with retinyl palmitate, a preformed form of vitamin A.

Dose, Safety & Label Transparency73

A serving provides 4,000 IU of vitamin A. The vitamin A row names beta-carotene; retinyl palmitate appears only under Other Ingredients. The source split is not fully declared on the vitamin A row.
Dosage Efficacy & Safety Thresholds
A serving provides 4,000 IU of vitamin A.
Label Transparency of Specific Forms
The vitamin A row names beta-carotene; retinyl palmitate appears only under Other Ingredients. The source split is not fully declared on the vitamin A row.

Value50

The cost per 5,000 IU of vitamin A is fairly high.
Price per 5,000 IU Dose
The cost per 5,000 IU of vitamin A is fairly high.
Iodine · 150 mcg OverallScore84
C+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value
A serving provides 150 mcg of iodine at a moderate cost per serving. The amount is within the range used for daily thyroid support. The iodine row doesn’t specify its form; potassium iodide appears in Other Ingredients, but its share of the iodine total is unknown.
How this ingredient is rated

Active Ingredient Quality & Bioavailability69

The iodine row doesn’t specify its form; potassium iodide appears in Other Ingredients, but its share of the iodine total is unknown. No marine source is stated, so seaweed-specific contamination concerns do not apply.
Iodine Form & Bioavailability
The iodine row doesn’t specify its form; potassium iodide appears in Other Ingredients, but its share of the iodine total is unknown.
Marine Source Purity & Sourcing
No marine source is stated, so seaweed-specific contamination concerns do not apply.

Dose, Safety & Label Transparency100

The label states 150 mcg of iodine per serving, within the range used for daily thyroid support.
Dosage Efficacy for Daily Support
The 150 mcg serving is within the range used for daily thyroid support.
Dosage Safety & Upper Limits
The amount is below the 1,100 mcg upper intake level.
Elemental Iodine Transparency
The label states the iodine amount per serving.

Value80

The cost per serving is moderate.
Price Per Effective Serving
The cost per serving is moderate.
Niacin · 20 mg OverallScore65
A- Active Ingredient Quality & BioavailabilityC+ Dose, Safety & Label TransparencyF Value
Each serving provides 20 mg of niacin, and the cost per serving is high. The niacin row does not name a form; niacinamide appears in Other Ingredients. Niacinamide is a non-flushing form.
How this ingredient is rated

Active Ingredient Quality & Bioavailability86

Niacinamide is a form used for general B vitamin support. Niacinamide is the named standard form.
Niacin Form & Goal Alignment
Niacinamide is a form used for general B vitamin support.
Precursor Source Quality
Niacinamide is the named standard form.

Dose, Safety & Label Transparency67

Each serving provides 20 mg of niacin. Niacinamide is a non-flushing form; no no-flush claim is recorded.
Clarity of Chemical Form
The niacin row does not name a form; niacinamide appears in Other Ingredients.
Form-Specific Dosage Efficacy
Each serving provides 20 mg of niacin.
Flush Risk & Safety Labeling
Niacinamide is a non-flushing form; no no-flush claim is recorded.

Value20

The cost per serving is high for the niacin component.
Price Per Effective Serving
The cost per serving is high for the niacin component.
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. What is the impact of daily oral supplementation of vitamin D3 (cholecalciferol) plus calcium on the incidence of hip fracture in older people? A systematic review and meta-analysis.
    Manoj P; Derwin R; George S · International journal of older people nursing · 2023
    Meta-analysis12,620 participants7 studies pooledBone Health forCalcium
  2. Calcium supplementation prevents seasonal bone loss and changes in biochemical markers of bone turnover in elderly New England women: a randomized placebo-controlled trial.
    Storm D; Eslin R; Porter ES; Musgrave K; Vereault D; Patton C; Kessenich C; Mohan S; Chen T; Holick MF; Rosen CJ · The Journal of clinical endocrinology and metabolism · 1998
    Randomized trial60 participantsBone Health forCalcium
  3. The effects of calcium supplementation (milk powder or tablets) and exercise on bone density in postmenopausal women.
    Prince R; Devine A; Dick I; Criddle A; Kerr D; Kent N; Price R; Randell A · Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 1995
    Randomized trial168 participantsBone Health forCalcium
  4. The efficacy of calcium supplementation alone in elderly Thai women over a 2-year period: a randomized controlled trial.
    Rajatanavin R; Chailurkit L; Saetung S; Thakkinstian A; Nimitphong H · Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2014
    Randomized trial404 participantsBone Health forCalcium
  5. Calcium-enriched foods and bone mass growth in prepubertal girls: a randomized, double-blind, placebo-controlled trial.
    Bonjour JP; Carrie AL; Ferrari S; Clavien H; Slosman D; Theintz G; Rizzoli R · The Journal of clinical investigation · 1997
    Randomized trial149 participantsBone Health forCalcium
  6. The Association between Dietary and Circulating Copper Levels and Osteoporosis: a Scoping Review.
    Ju Y; Xiong W; Pang Y; Chen Z; Hou J; Zheng S; Li Z; Liu T; Xia H; Xia M; Zhong Y; Li J; Jiang X · Biological trace element research · 2026
    Scoping review18 studies pooledBone Health forCopper
  7. Association between dietary copper, iron, zinc, selenium intake and osteopenia or osteoporosis in elderly hypertensive patients: a retrospective cohort study.
    Chen M; Jia L; Gao R · Frontiers in nutrition · 2024
    Cohort study5,286 participantsBone Health forCopper
  8. Associations of dietary copper intake with total bone mineral density and lumbar spine bone mineral density in American adults.
    Hu M; Wang Z; Li C; Zheng Y; Hu J · Medicine · 2025
    Cross-sectional studyBone Health forCopper
  9. The association between dietary mineral intake and bone mineral density: a cross-sectional study.
    Wei M; Wei J; Huang S · Journal of health, population, and nutrition · 2025
    Cross-sectional study11,520 participantsBone Health forCopper
  10. Association between dietary copper intake and bone mineral density in children and adolescents aged 8-19 years: A cross-sectional study.
    Cui A; Yan J; Li H; Fan Z; Wei X; Wang H; Zhuang Y · PloS one · 2024
    Cross-sectional study6,965 participantsBone Health forCopper
  11. Association between RBC folate and lumbar bone mineral density in postmenopausal women, a cross-sectional study from NHANES 2009-2018.
    Wei H; Jin Z; Zhou L; Tang G; Chai S; Che X; Tan Y; Zeng W · Frontiers in endocrinology · 2025
    Cross-sectional study1,315 participantsBone Health forFolate
  12. Genetic variants modify the associations of concentrations of methylmalonic acid, vitamin B-12, vitamin B-6, and folate with bone mineral density.
    Liu CT; Karasik D; Xu H; Zhou Y; Broe K; Cupples LA; Cpgm de Groot L; Ham A; Hannan MT; Hsu YH; Jacques P; McLean RR; Paul L; Selhub J; Trajanoska K; van der Velde N; van Schoor N; Kiel DP · The American journal of clinical nutrition · 2021
    Cohort study4,310 participantsBone Health forFolate
  13. Adequate Intake and Supplementation of B Vitamins, in Particular Folic Acid, can Play a Protective Role in Bone Health.
    Rondanelli M; Tartara A; Fossari F; Vecchio V; Faliva MA; Naso M; Perna S; Nichetti M; Peroni G · Current aging science · 2022
    Narrative review35,298 participants29 studies pooledBone Health forFolate Bone Health forVitamin B6
  14. Relation of homocysteine, folate, and vitamin B12 to bone mineral density of postmenopausal women.
    Cagnacci A; Baldassari F; Rivolta G; Arangino S; Volpe A · Bone · 2004
    Cross-sectional study161 participantsBone Health forFolate
  15. Dietary intake of folate, but not vitamin B2 or B12, is associated with increased bone mineral density 5 years after the menopause: results from a 10-year follow-up study in early postmenopausal women.
    Rejnmark L; Vestergaard P; Hermann AP; Brot C; Eiken P; Mosekilde L · Calcified tissue international · 2008
    Cohort study1,869 participantsBone Health forFolate
  16. Association between Serum Magnesium and Fractures: A Systematic Review and Meta-Analysis of Observational Studies.
    Dominguez LJ; Veronese N; Ciriminna S; Pérez-Albela JL; Vásquez-López VF; Rodas-Regalado S; Di Bella G; Parisi A; Tagliaferri F; Barbagallo M · Nutrients · 2023
    Meta-analysis119,755 participants4 studies pooledBone Health forMagnesium
  17. Bioabsorbable Magnesium-Based Materials Potential and Safety in Bone Surgery: A Systematic Review.
    Hung CH; Kwok YC; Yip J; Wong HH; Leung YY · Craniomaxillofacial trauma & reconstruction · 2025
    Systematic review386 participants8 studies pooledBone Health forMagnesium
  18. Vascularized bone grafting fixed by biodegradable magnesium screw for treating osteonecrosis of the femoral head.
    Zhao D; Huang S; Lu F; Wang B; Yang L; Qin L; Yang K; Li Y; Li W; Wang W; Tian S; Zhang X; Gao W; Wang Z; Zhang Y; Xie X; Wang J; Li J · Biomaterials · 2016
    Randomized trial48 participantsBone Health forMagnesium
  19. An update on magnesium and bone health.
    Rondanelli M; Faliva MA; Tartara A; Gasparri C; Perna S; Infantino V; Riva A; Petrangolini G; Peroni G · Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2022
    Narrative reviewBone Health forMagnesium
  20. Sex-specific differences in the association of magnesium intake with femoral neck bone mineral density among older adults.
    Wang B; Tan X; Yao X; Zhu Z · Endocrine connections · 2025
    Cross-sectional study1,343 participantsBone Health forMagnesium