One-A-Day Women's Multivitamin Prenatal 1

Common questions

Is One-A-Day Women's Multivitamin Prenatal 1 healthy?

One-A-Day Women's Multivitamin Prenatal 1 scores 78/100 on Scout's independent analysis of ingredients, additives, and lab results — a fair-to-good score — solid, with tradeoffs. This prenatal multivitamin contains beneficial ingredients such as Omega-3 Fish Oil, Calcium Ascorbate, and Biotin, which support heart, bone, and skin health.

How processed is One-A-Day Women's Multivitamin Prenatal 1?

One-A-Day Women's Multivitamin Prenatal 1 is NOVA Group 3: Processed Foods.

Which ingredients drive One-A-Day Women's Multivitamin Prenatal 1's score?

In Scout's ingredient-by-ingredient analysis, Omega-3 Fish Oil, Calcium Ascorbate, Magnesium Oxide count in its favor; Color, Soy Lecithin are flagged as ingredients of concern. The full breakdown, with why each one matters, is in the Key ingredients section on this page.

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One-A-Day Women's Multivitamin Prenatal 1

One A Day
Bioengineered
78 Good

Analysis updated September 2026 · How Scout scores

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At a glance

Beneficial ingredients 17
Harmful ingredients 2
Owned by Bayer
Category Vitamins and Minerals
Summary

This prenatal multivitamin contains beneficial ingredients such as Omega-3 Fish Oil, Calcium Ascorbate, and Biotin, which support heart, bone, and skin health. However, the presence of artificial colors and soy lecithin, which may cause allergic reactions and provide minimal nutritional benefits, slightly detracts from its overall quality. The formulation is generally well-rounded, but these additives prevent it from achieving a higher score.

Key ingredients 26

Omega-3 Fish Oil
Very Good

Omega-3 Fish Oil is a high-quality source of essential fatty acids that support heart and brain health. It is derived from fish, providing EPA and DHA, which are crucial for reducing inflammation and promoting cognitive function. The oil is typically processed to remove contaminants, ensuring safety and efficacy.

Risks

Potential risks include contamination with heavy metals if not properly purified.

Benefits

Rich in EPA and DHA, which are beneficial for cardiovascular and neurological health.

Calcium Ascorbate
Very Good

Calcium Ascorbate is a buffered form of Vitamin C that is gentle on the stomach and provides both calcium and ascorbic acid. It enhances immune function and collagen synthesis while also contributing to bone health. This form is less acidic, making it suitable for those with sensitive stomachs.

Benefits

Provides Vitamin C and calcium, supporting immune health and bone strength.

See more about Calcium Ascorbate →
Cyanocobalamin
Very Good

Cyanocobalamin is a synthetic form of Vitamin B12 used in supplements to support nerve function and red blood cell production. It is effective in preventing and treating Vitamin B12 deficiency. It is water-soluble and generally safe at recommended doses.

Benefits

Supports nerve function and red blood cell production, preventing B12 deficiency.

See more about Cyanocobalamin →
d-Alpha-Tocopherol
Very Good

d-Alpha-Tocopherol is a natural form of Vitamin E that acts as an antioxidant, protecting cells from oxidative damage. It is derived from natural sources and supports immune function and skin health. It is more bioavailable than synthetic forms of Vitamin E.

Benefits

Acts as an antioxidant, supporting immune function and skin health.

See more about d-Alpha-Tocopherol →
D-Calcium Pantothenate
Very Good

D-Calcium Pantothenate is a form of Vitamin B5 used in supplements to support energy metabolism and the synthesis of coenzyme A. It is essential for the breakdown of carbohydrates, proteins, and fats. It is water-soluble and generally safe at recommended doses.

Benefits

Supports energy metabolism and the synthesis of coenzyme A.

See more about D-Calcium Pantothenate →
Potassium Iodide
Very Good

Potassium Iodide is a source of iodine used in supplements to support thyroid function and prevent iodine deficiency. It is essential for the production of thyroid hormones, which regulate metabolism. It is generally safe at recommended doses.

Risks

Excessive intake may lead to thyroid dysfunction.

Benefits

Supports thyroid function and prevents iodine deficiency.

See more about Potassium Iodide →
Thiamine Mononitrate
Very Good

Thiamine Mononitrate is a form of Vitamin B1 used in supplements to support energy metabolism and nerve function. It is essential for the conversion of carbohydrates into energy. It is water-soluble and generally safe at recommended doses.

Benefits

Supports energy metabolism and nerve function.

See more about Thiamine Mononitrate →
Magnesium Oxide
Good

Magnesium Oxide is a common form of magnesium used in supplements to support muscle and nerve function. It is an effective source of magnesium, though it has lower bioavailability compared to other forms. It is often used to prevent or treat magnesium deficiencies.

Risks

High doses may cause gastrointestinal discomfort or diarrhea.

Benefits

Provides essential magnesium for muscle and nerve function.

See more about Magnesium Oxide →
Beta-Carotene
Good

Beta-Carotene is a precursor to Vitamin A and acts as an antioxidant, supporting vision and immune health. It is derived from natural sources and is converted to Vitamin A in the body as needed. It helps protect cells from oxidative damage.

Risks

Excessive intake may lead to carotenemia, a harmless condition causing yellowing of the skin.

Benefits

Supports vision and immune health as a precursor to Vitamin A.

See more about Beta-Carotene →
Biotin
Good

Biotin is a B-vitamin that supports healthy hair, skin, and nails. It plays a crucial role in energy metabolism and is essential for the synthesis of fatty acids and amino acids. It is water-soluble and generally safe at recommended doses.

Benefits

Supports healthy hair, skin, and nails, and aids in energy metabolism.

See more about Biotin →
Carbonyl Iron
Good

Carbonyl Iron is a pure form of iron used in supplements to prevent or treat iron deficiency anemia. It is well-tolerated and has a high bioavailability compared to other forms of iron. It is essential for the production of hemoglobin and red blood cells.

Risks

Excessive intake can lead to iron overload and toxicity.

Benefits

Supports the production of hemoglobin and red blood cells, preventing anemia.

Niacinamide
Good

Niacinamide is a form of Vitamin B3 used in supplements to support skin health and energy metabolism. It is effective in improving skin barrier function and reducing inflammation. It is water-soluble and generally safe at recommended doses.

Benefits

Supports skin health and energy metabolism.

See more about Niacinamide →
Pyridoxine Hydrochloride
Good

Pyridoxine Hydrochloride is a form of Vitamin B6 used in supplements to support brain health and neurotransmitter synthesis. It is essential for amino acid metabolism and the production of serotonin and dopamine. It is water-soluble and generally safe at recommended doses.

Benefits

Supports brain health and neurotransmitter synthesis.

See more about Pyridoxine Hydrochloride →
Retinyl Palmitate
Good

Retinyl Palmitate is a form of Vitamin A used in supplements to support vision and immune health. It is a stable form of Vitamin A that is easily absorbed and utilized by the body. It is essential for maintaining healthy skin and mucous membranes.

Risks

Excessive intake may lead to Vitamin A toxicity.

Benefits

Supports vision and immune health, maintaining healthy skin and mucous membranes.

Riboflavin
Good

Riboflavin is a B-vitamin used in supplements to support energy production and antioxidant function. It is essential for the metabolism of carbohydrates, fats, and proteins. It is water-soluble and generally safe at recommended doses.

Benefits

Supports energy production and antioxidant function.

See more about Riboflavin →
Vitamin D3
Good

Vitamin D3 is a form of Vitamin D used in supplements to support bone health and immune function. It is more effective than Vitamin D2 in raising blood levels of Vitamin D. It is essential for calcium absorption and bone mineralization.

Risks

Excessive intake may lead to hypercalcemia and associated health issues.

Benefits

Supports bone health and immune function, enhancing calcium absorption.

See more about Vitamin D3 →
Zinc Oxide
Good

Zinc Oxide is a source of zinc used in supplements to support immune function and wound healing. It is a stable form of zinc, though it has lower bioavailability compared to other forms. It is essential for numerous enzymatic reactions in the body.

Risks

High doses may interfere with copper absorption and lead to deficiencies.

Benefits

Supports immune function and wound healing, essential for enzymatic reactions.

See more about Zinc Oxide →
Calcium Carbonate
Neutral

Standard formulation ingredient — neither beneficial nor harmful at typical use.

Risks

Excessive intake may lead to kidney stones or impaired absorption of other minerals.

Benefits

Provides essential calcium for maintaining strong bones and teeth.

See more about Calcium Carbonate →
Gelatin
Neutral

Gelatin is used as a gelling agent in supplements, derived from animal collagen. It is generally considered safe and is used to encapsulate vitamins and minerals. It does not contribute significant nutritional value but aids in the delivery of active ingredients.

Benefits

Facilitates the encapsulation and delivery of active ingredients in supplements.

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Glycerin
Neutral

Glycerin is a humectant used to maintain moisture in supplements. It is derived from plant or animal sources and is generally recognized as safe. It does not provide nutritional benefits but helps maintain the stability of the product.

Benefits

Helps maintain moisture and stability in the supplement formulation.

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Yellow Beeswax
Neutral

Yellow Beeswax is used as a glazing agent and stabilizer in supplements. It is a natural product derived from bees and is generally considered safe. It does not provide nutritional benefits but aids in the structural integrity of the supplement.

Benefits

Helps maintain the structural integrity and stability of the supplement.

Cupric Oxide
Neutral

Cupric Oxide is a source of copper used in supplements to support various enzymatic processes. It is a stable form of copper, though its bioavailability is lower compared to other forms. It is essential for iron metabolism and the formation of connective tissue.

Benefits

Supports enzymatic processes and iron metabolism.

Folic Acid
Neutral

Standard formulation ingredient — neither beneficial nor harmful at typical use.

Risks

Excessive intake may mask Vitamin B12 deficiency symptoms.

Benefits

Supports fetal development and prevents neural tube defects.

See more about Folic Acid →
Purified Water
Neutral

Purified Water is used as a solvent and carrier in supplements. It is free from impurities and contaminants, ensuring the safety and stability of the product. It does not provide nutritional benefits but is essential for the formulation of liquid supplements.

Benefits

Ensures the safety and stability of the supplement formulation.

See more about Purified Water →
Color
Bad

The use of artificial colors in supplements can be concerning due to potential allergic reactions and health risks. These colors are often synthetic and may not provide any nutritional benefits. The specific type of colorant used is not disclosed, which can be problematic for sensitive individuals.

Risks

Potential allergic reactions and health concerns associated with synthetic dyes.

Soy Lecithin
Bad

Soy Lecithin is used as an emulsifier in supplements, derived from soybeans. It is a processed ingredient that may contain traces of soy allergens. While it aids in the stability of the product, it does not provide significant nutritional benefits.

Risks

May contain traces of soy allergens, posing a risk to individuals with soy allergies.

Benefits

Aids in the stability and emulsification of the supplement.

See more about Soy Lecithin →

Processing

Group 3 · Processed

Processed Foods

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