Prenatal 1

Prenatal 1

Bayer One A Day Woman's4.5 (3,346 ratings)
Format:Softgel Quantity: 60 Softgel(s) · 60 servings
Goals
$21.49 $0.35 per serving

Product analysis

48 out of 100

Prenatal 1 supplies iron and other nutrients that may help with tiredness or hair health when intake is low. Most nutrient forms are not disclosed, making detailed quality comparisons harder.

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

Nutrient Quality23

Most nutrient forms are not disclosed, limiting a clear comparison of their quality. The fish oil also lacks clear detail about the form that affects how readily it can be absorbed.

Ingredient Transparency69

All listed amounts are disclosed, so the serving contents can be checked. Most nutrient forms are omitted, leaving less detail for comparing alternatives.

Value For Money44

Iodine and copper offer good value, while iron offers moderate value. The omega-3 portion is costly for the amount supplied, and the value of most remaining nutrients is uncertain.

Customer Satisfaction83

Customer ratings are very positive across thousands of reviews. The broad feedback describes satisfaction without establishing safety or nutritional suitability.

Product Focus40

The formula combines nutrients relevant to tiredness, hair health and concentration when intake is low. Its broad mix does not establish extra benefits when nutritional needs are already met.

Format
Softgel
Container
60 Softgel(s)
Per serving
$0.35
Customer rating
4.5 · 3,346 ratings
Report analysis

Goals

Hair Health
Impact
High effect
B- Ingredient FitF PathwaysA+ EvidenceA+ Formulation Logic
Biotin · 35 mcgVitamin D · 15 mcgZinc · 13 mgIron · 27 mgVitamin C · 85 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
High effect
B- Ingredient FitF PathwaysA+ EvidenceA+ Formulation Logic
Iodine · 150 mcgVitamin D · 15 mcgVitamin B5 · 7 mgMagnesium · 40 mgRiboflavin · 1.6 mgThiamin · 1.4 mgVitamin B12 · 2.8 mcgIron · 27 mg
Study evidence
Iodine Adverse 3 studies
Iron Supportive 74 studies
Magnesium Supportive 4 studies
Thiamin Disputed 12 studies
Vitamin D Supportive 32 studies
Productivity Boost
Impact
Moderate effect
C- Ingredient FitF PathwaysA EvidenceA+ Formulation Logic
Iron · 27 mgVitamin B12 · 2.8 mcgVitamin B12 · 2.8 mcgVitamin B6 · 2 mgZinc · 13 mgMagnesium · 40 mgOmega-3 · 235 mg
Study evidence
Iron Supportive 69 studies
Magnesium Supportive 10 studies
Omega-3 Supportive 46 studies
Zinc Supportive 11 studies

Ingredients

IngredientAmount per servingScore
Calories
5 Calorie(s)
Total Fat
0.5 Gram(s)
Cholesterol
5 mg
Vitamin A (Beta-Carotene)
650 mcg
Vitamin C
85 mg
Vitamin D
15 mcg
Vitamin E
19 mg
Thiamine
1.4 mg
Riboflavin
1.6 mg
Niacin
18 mg
Vitamin B6
2 mg
Folate
1330 mcg DFE
Vitamin B12
2.8 mcg
Biotin
35 mcg
Pantothenic Acid
7 mg
Calcium
150 mg
Iron
27 mg 51
Iodine
150 mcg 84
Magnesium
40 mg
Zinc
13 mg
Copper
1.3 mg 56
Omega-3 Fatty Acids (Fish Oil)
235 mg 42
Gluten Free Pregnant Women 18–50
Report overview
Iodine · 150 mcg OverallScore84
C+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value
150 mcg of iodine per serving comes at a relatively low cost per serving. The amount supports daily iodine intake. The iodine source is unclear; potassium iodide appears in Other Ingredients, but its contribution to the listed iodine is unknown.
How this ingredient is rated

Active Ingredient Quality & Bioavailability69

The iodine source is unclear; potassium iodide appears in Other Ingredients, but its contribution to the listed iodine is unknown. No marine source is indicated, so the seaweed-specific purity concern does not apply.
Iodine Form & Bioavailability
The iodine source is unclear; potassium iodide appears in Other Ingredients, but its contribution to the listed iodine is unknown.
Marine Source Purity & Sourcing
No marine source is indicated, so the seaweed-specific purity concern does not apply.

Dose, Safety & Label Transparency100

150 mcg of iodine per serving supports daily iodine intake. The iodine amount is stated, though the main iodine entry does not identify its source.
Dosage Efficacy for Daily Support
150 mcg of iodine per serving supports daily iodine intake.
Dosage Safety & Upper Limits
The serving amount is below the upper intake level.
Elemental Iodine Transparency
The iodine amount is stated, though the main iodine entry does not identify its source.

Value80

The cost per serving is relatively low.
Price Per Effective Serving
The cost per serving is relatively low.
Iron · 27 mg OverallScore51
F Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyD+ Value
A serving provides 27 mg iron. The cost per serving is moderate. carbonyl Iron appears in Other Ingredients, but its contribution to the iron total is unclear. Zinc is also present and may compete with iron for absorption.
How this ingredient is rated

Active Ingredient Quality & Bioavailability3

carbonyl Iron appears in Other Ingredients, but its contribution to the iron total is unclear. It also contains 85 mg vitamin C, B12 and folate. Zinc is present and may compete with iron for absorption.
Iron Chemical Form & Bioavailability
carbonyl Iron appears in Other Ingredients, but its contribution to the iron total is unclear.
Absorption Support & Blocker Avoidance
It also contains 85 mg vitamin C, B12 and folate. Zinc is present and may compete with iron for absorption.

Dose, Safety & Label Transparency100

A serving provides 27 mg iron. The iron amount is listed separately.
Elemental Iron Label Clarity
The iron amount is listed separately.
Dosage Effectiveness & Safety Range
A serving provides 27 mg iron.

Value50

The cost per serving is moderate.
Price per Effective Serving
The cost per serving is moderate.
Copper · 1.3 mg OverallScore56
F Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyB+ Value
A serving provides 1.3 mg of copper at a fairly low cost per serving. The amount is clearly stated. Cupric Oxide appears in Other Ingredients, but its contribution to the listed copper amount is unknown.
How this ingredient is rated

Active Ingredient Quality & Bioavailability15

Cupric Oxide appears in Other Ingredients, but its contribution to the listed copper amount is unknown.
Copper Form Bioavailability
Cupric Oxide appears in Other Ingredients, but its contribution to the listed copper amount is unknown.
Elemental Copper Labeling Clarity
The label states 1.3 mg of copper; Cupric Oxide appears separately in Other Ingredients.

Dose, Safety & Label Transparency86

The serving provides 1.3 mg of copper. The serving lists 13 mg zinc alongside 1.3 mg copper.
Copper Dosage Safety & Efficacy
The serving provides 1.3 mg of copper.
Zinc-to-Copper Balance
The serving lists 13 mg zinc alongside 1.3 mg copper.

Value80

The cost per serving is fairly low.
Price Per Serving Efficiency
The cost per serving is fairly low.
Report alternatives

Sources

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

  1. Association of radioactive iodine treatment with survivorship symptoms and primary care utilisation in women of reproductive age with thyroid cancer: a retrospective cohort study.
    Devanarayan P; Hartman M; Partin M · Family medicine and community health · 2026
    Cohort study10,882 participantsEnergy forIodine
  2. Energy level and fatigue after surgery for thyroid cancer: A population-based study of patient-reported outcomes.
    Hughes DT; Reyes-Gastelum D; Kovatch KJ; Hamilton AS; Ward KC; Haymart MR · Surgery · 2020
    Cohort study2,584 participantsEnergy forIodine
  3. Health-Related Quality of Life in Differentiated Thyroid Cancer Survivors: A Cross-Sectional Study From Turkey.
    Gültekin A; Kahraman MY; Şengöz T; Şimşek FS · Head & neck · 2026
    Cross-sectional study202 participantsEnergy forIodine
  4. Large-dose intravenous ferric carboxymaltose injection for iron deficiency anemia in heavy uterine bleeding: a randomized, controlled trial.
    Van Wyck DB; Mangione A; Morrison J; Hadley PE; Jehle JA; Goodnough LT · Transfusion · 2010
    Randomized trial477 participantsEnergy forIron
  5. The Effect of Parenteral or Oral Iron Supplementation on Fatigue, Sleep, Quality of Life and Restless Legs Syndrome in Iron-Deficient Blood Donors: A Secondary Analysis of the IronWoMan RCT.
    Macher S; Herster C; Holter M; Moritz M; Matzhold EM; Stojakovic T; Pieber TR; Schlenke P; Drexler C; Amrein K · Nutrients · 2021
    Randomized trial176 participantsEnergy forIron
  6. Ferric carboxymaltose vs. oral iron in the treatment of pregnant women with iron deficiency anemia: an international, open-label, randomized controlled trial (FER-ASAP).
    Breymann C; Milman N; Mezzacasa A; Bernard R; Dudenhausen J; FER-ASAP investigators · Journal of perinatal medicine · 2018
    Randomized trial252 participantsEnergy forIron
  7. Effect of iron therapy on fatigue symptoms in non-anaemic iron deficient women of reproductive age- A Randomized Controlled Trial.
    Sultana N; Bajwa FA; Sikandar MZ; Haider MM; Majeed T · JPMA. The Journal of the Pakistan Medical Association · 2026
    Randomized trial164 participantsEnergy forIron
  8. Intravenous iron isomaltoside treatment of women suffering from severe fatigue after postpartum hemorrhage.
    Holm C; Thomsen LL; Langhoff-Roos J · The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians · 2019
    Randomized trial85 participantsEnergy forIron
  9. Magnesium-L-threonate improves sleep quality and daytime functioning in adults with self-reported sleep problems: A randomized controlled trial.
    Hausenblas HA; Lynch T; Hooper S; Shrestha A; Rosendale D; Gu J · Sleep medicine: X · 2025
    Randomized trial80 participantsEnergy forMagnesium
  10. Total magnesium intake and risk of frailty in older women.
    Struijk EA; Fung TT; Bischoff-Ferrari HA; Willett WC; Lopez-Garcia E · Journal of cachexia, sarcopenia and muscle · 2024
    Cohort study81,524 participantsEnergy forMagnesium
  11. Red blood cell magnesium and chronic fatigue syndrome.
    Cox IM; Campbell MJ; Dowson D · Lancet (London, England) · 1991
    Randomized trial32 participantsEnergy forMagnesium
  12. Exercise, magnesium and immune function.
    Laires MJ; Monteiro C · Magnesium research · 2008
    Narrative reviewEnergy forMagnesium
  13. Physicochemical properties of and volatile compounds in riboflavin fortified cloudy apple juice; study of its effect on job fatigue among Egyptian construction workers.
    Fouad S; Ibrahim GE; Hussein AMS; Ibrahim FA; El Gendy A · Heliyon · 2021
    Non-randomized trialEnergy forRiboflavin
  14. Vitamin B status in patients with chronic fatigue syndrome.
    Heap LC; Peters TJ; Wessely S · Journal of the Royal Society of Medicine · 1999
    Case-control study30 participantsEnergy forRiboflavin
  15. B-vitamins, related vitamers, and metabolites in patients with quiescent inflammatory bowel disease and chronic fatigue treated with high dose oral thiamine.
    Bager P; Hvas CL; Hansen MM; Ueland P; Dahlerup JF · Molecular medicine (Cambridge, Mass.) · 2023
    Observational studyEnergy forRiboflavin
  16. Metabolic features of chronic fatigue syndrome.
    Naviaux RK; Naviaux JC; Li K; Bright AT; Alaynick WA; Wang L; Baxter A; Nathan N; Anderson W; Gordon E · Proceedings of the National Academy of Sciences of the United States of America · 2024
    Case-control study84 participantsEnergy forRiboflavin
  17. Effectiveness of Riboflavin in Inherited Metabolic Diseases: A Systematic Review
    Bregje Jaeger, Nina N Stolwijk, Femke Aaldering, Charlotte A Ruys, Marije Smits, Nicole I Wolf, Carla E M Hollak, Annet M Bosch · Journal of Inherited Metabolic Disease · 2026
    Systematic review381 studies pooledEnergy forRiboflavin
  18. Influence of thiamin supplementation on the health and general well-being of an elderly Irish population with marginal thiamin deficiency.
    Smidt LJ; Cremin FM; Grivetti LE; Clifford AJ · Journal of gerontology · 1991
    Randomized trial80 participantsEnergy forThiamin
  19. Randomised clinical trial: high-dose oral thiamine versus placebo for chronic fatigue in patients with quiescent inflammatory bowel disease.
    Bager P; Hvas CL; Rud CL; Dahlerup JF · Alimentary pharmacology & therapeutics · 2021
    Randomized trial40 participantsEnergy forThiamin
  20. Dietary reference values for thiamin.
    EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA); Turck D; Bresson JL; Burlingame B; Dean T; Fairweather-Tait S; Heinonen M; Hirsch-Ernst KI; Mangelsdorf I; McArdle HJ; Naska A; Nowicka G; Pentieva K; Sanz Y; Siani A; Sjödin A; Stern M; Tomé D; Van Loveren H; Vinceti M; Willatts P; Lamberg-Allardt C; Przyrembel H; Tetens I; Gudelj Rakic J; Ioannidou S; de Sesmaisons-Lecarré A; Forss AC; Neuhäuser-Berthold M · EFSA journal. European Food Safety Authority · 2026
    Guideline / consensusEnergy forThiamin