One A Day product image with 60/100 Zerotox safety score

Is One A Day Safe? Ingredient Analysis

Bayer

Bayer's One A Day is reviewed here as a supplement. Zerotox gives it 60/100 based on the current ingredient profile, so it looks generally acceptable but still includes some ingredients worth reviewing.

The ingredient review below focuses especially on Gelatin.

60 / 100

Moderate quality

Why score is 60

The composition includes several synthetic additives such as maltodextrin and gelatin, which raise quality concerns. While vitamins like ascorbic acid and cyanocobalamin are beneficial, the presence of synthetic ingredients and potential allergens like gelatin lower the overall safety assessment.

Main concern

Contains gelatin, which poses allergen risks for individuals with dietary restrictions.

Why it matters: This ingredient is flagged in our analysis based on regulatory and scientific sources. Check the Ingredients section for details and see Data sources for methodology.

Regulation status: Ingredient safety is assessed from EU/EPA/CIR and similar databases; formulations may vary. Always read the product label.

Pros

  • Contains essential vitamins like ascorbic acid and cyanocobalamin, which are important for overall health.
  • Includes minerals such as calcium carbonate and magnesium oxide, contributing to dietary needs.

Concerns

  • Contains gelatin, which poses allergen risks for individuals with dietary restrictions.
  • Maltodextrin is a processed ingredient that raises concerns about its impact on blood sugar levels.

Who should avoid this product?

This formula may not suit:

  • people with sensitive skin or fragrance sensitivity
  • users trying to avoid sulfates
  • people avoiding animal-derived ingredients

Ingredients breakdown

Below, each ingredient is described in the context of this supplement, not just listed as a raw label.

  • Is Calcium Carbonate safe in this supplement?

    Good

    Calcium Carbonate is used here as base. Calcium carbonate is a mineral used to provide calcium in this supplement. It supports bone health and is generally recognized as safe when consumed in appropriate amounts.

    Role in formula: base

    Original: Calcium Carbonate

    Read the full ingredient profile for Calcium Carbonate

  • Is Magnesium Oxide safe in this supplement?

    Good

    Magnesium Oxide is used here as base. Magnesium oxide is a mineral that contributes to magnesium intake. It plays a role in various bodily functions, including muscle and nerve function, and is considered safe in moderate amounts.

    Role in formula: base

    Original: Magnesium Oxide

    Read the full ingredient profile for Magnesium Oxide

  • Is Microcrystalline Cellulose safe in this supplement?

    Medium

    Microcrystalline Cellulose is used here as stabilizer. Microcrystalline cellulose is a plant-derived ingredient used as a filler and stabilizer in this supplement. While generally safe, it is a processed ingredient that may raise concerns for some consumers.

    Role in formula: stabilizer

    Original: Microcrystalline Cellulose

    Read the full ingredient profile for Microcrystalline Cellulose

  • Is Ascorbic Acid safe in this supplement?

    Good

    Ascorbic Acid is used here as base. Ascorbic acid, or vitamin C, is included for its antioxidant properties and role in immune function. It is a beneficial addition to this supplement, contributing positively to overall health.

    Role in formula: base

    Original: Ascorbic Acid

    Read the full ingredient profile for Ascorbic Acid

  • Is Dl Alpha Tocopheryl Acetate safe in this supplement?

    Medium

    Dl Alpha Tocopheryl Acetate is used here as base. Dl-alpha-tocopheryl acetate is a synthetic form of vitamin E used for its antioxidant properties. While it provides benefits, its synthetic nature raises some quality concerns.

    Role in formula: base

    Original: dl-Alpha-Tocopheryl Acetate

    Read the full ingredient profile for Dl Alpha Tocopheryl Acetate

  • Is Maltodextrin safe in this supplement?

    Medium

    Maltodextrin is used here as base. Maltodextrin is a carbohydrate derived from starch, used as a filler in this supplement. It is processed and can impact blood sugar levels, raising concerns for some consumers.

    Role in formula: base

    Original: Maltodextrin

    Read the full ingredient profile for Maltodextrin

  • Is Gelatin safe in this supplement?

    Bad

    Gelatin is used here as base. Gelatin is derived from animal sources and is used as a binding agent. It poses allergen risks for individuals with dietary restrictions and raises concerns about animal-derived ingredients.

    Role in formula: base

    Original: Gelatin

    Read the full ingredient profile for Gelatin

  • Is D Calcium Pantothenate safe in this supplement?

    Good

    D Calcium Pantothenate is used here as base. D-calcium pantothenate is a form of vitamin B5 that supports energy metabolism. It is a beneficial addition to this supplement, contributing positively to overall health.

    Role in formula: base

    Original: D-Calcium Pantothenate

    Read the full ingredient profile for D Calcium Pantothenate

  • Is Biotin safe in this supplement?

    Good

    Biotin is used here as base. Biotin is a B-vitamin that supports healthy hair, skin, and nails. Its inclusion in this supplement is beneficial for those looking to enhance their beauty regimen.

    Role in formula: base

    Original: Biotin

    Read the full ingredient profile for Biotin

  • Is Cholecalciferol safe in this supplement?

    Good

    Cholecalciferol is used here as base. Cholecalciferol, or vitamin D3, is included for its role in calcium absorption and bone health. It is a beneficial addition to this supplement.

    Role in formula: base

    Original: Cholecalciferol

    Read the full ingredient profile for Cholecalciferol

  • Is Chromium Chloride safe in this supplement?

    Medium

    Chromium Chloride is used here as base. Chromium chloride is a mineral that may help with blood sugar regulation. While it has potential benefits, its effectiveness can vary among individuals.

    Role in formula: base

    Original: Chromium Chloride

    Read the full ingredient profile for Chromium Chloride

  • Is Copper Sulfate safe in this supplement?

    Medium

    Copper Sulfate is used here as base. Copper sulfate is a mineral used to provide copper in this supplement. While necessary in small amounts, excessive intake can lead to toxicity.

    Role in formula: base

    Original: Copper Sulfate

    Read the full ingredient profile for Copper Sulfate

  • Is Croscarmellose Sodium safe in this supplement?

    Medium

    Croscarmellose Sodium is used here as stabilizer. Croscarmellose sodium is a modified cellulose used as a disintegrant in tablets. It is generally recognized as safe but is a processed ingredient.

    Role in formula: stabilizer

    Original: Croscarmellose Sodium

    Read the full ingredient profile for Croscarmellose Sodium

  • Is Cyanocobalamin safe in this supplement?

    Good

    Cyanocobalamin is used here as base. Cyanocobalamin is a synthetic form of vitamin B12, essential for nerve function and red blood cell production. Its inclusion is beneficial for those with dietary restrictions.

    Role in formula: base

    Original: Cyanocobalamin

    Read the full ingredient profile for Cyanocobalamin

  • Is Folic Acid safe in this supplement?

    Good

    Folic Acid is used here as base. Folic acid is a B-vitamin important for DNA synthesis and cell division. Its presence in this supplement supports overall health, particularly for women of childbearing age.

    Role in formula: base

    Original: Folic Acid

    Read the full ingredient profile for Folic Acid

  • Is Guar Gum safe in this supplement?

    Medium

    Guar Gum is used here as thickener. Guar gum is a natural thickening agent derived from guar beans. While it is generally safe, it is a processed ingredient that may cause digestive issues in some individuals.

    Role in formula: thickener

    Original: Guar Gum

    Read the full ingredient profile for Guar Gum

  • Is Hydroxypropyl Methylcellulose safe in this supplement?

    Medium

    Hydroxypropyl Methylcellulose is used here as stabilizer. Hydroxypropyl methylcellulose is a synthetic polymer used as a thickener and stabilizer. Its synthetic nature raises quality concerns despite its functional benefits.

    Role in formula: stabilizer

    Original: Hydroxypropyl Methylcellulose

  • Is Manganese Sulfate safe in this supplement?

    Medium

    Manganese Sulfate is used here as base. Manganese sulfate is a mineral that supports various bodily functions. While beneficial in small amounts, excessive intake can lead to toxicity.

    Role in formula: base

    Original: Manganese Sulfate

    Read the full ingredient profile for Manganese Sulfate

  • Is Medium Chain Triglycerides safe in this supplement?

    Medium

    Medium Chain Triglycerides is used here as base. Medium chain triglycerides are a type of fat that can provide quick energy. While they have potential benefits, they are still a form of fat that should be consumed in moderation.

    Role in formula: base

    Original: Medium Chain Triglycerides

    Read the full ingredient profile for Medium Chain Triglycerides

  • Is Niacinamide safe in this supplement?

    Good

    Niacinamide is used here as base. Niacinamide is a form of vitamin B3 that supports skin health and metabolism. Its inclusion is beneficial for overall health.

    Role in formula: base

    Original: Niacinamide

    Read the full ingredient profile for Niacinamide

  • Is Potassium Iodide safe in this supplement?

    Good

    Potassium Iodide is used here as base. Potassium iodide is a source of iodine, essential for thyroid function. Its presence in this supplement supports overall health.

    Role in formula: base

    Original: Potassium Iodide

    Read the full ingredient profile for Potassium Iodide

  • Is Pyridoxine Hydrochloride safe in this supplement?

    Good

    Pyridoxine Hydrochloride is used here as base. Pyridoxine hydrochloride is a form of vitamin B6 that supports metabolism and brain health. Its inclusion is beneficial for overall health.

    Role in formula: base

    Original: Pyridoxine Hydrochloride

    Read the full ingredient profile for Pyridoxine Hydrochloride

  • Is Riboflavin safe in this supplement?

    Good

    Riboflavin is used here as base. Riboflavin, or vitamin B2, is included for its role in energy production and cellular function. It is a beneficial addition to this supplement.

    Role in formula: base

    Original: Riboflavin

    Read the full ingredient profile for Riboflavin

  • Is Silicon Dioxide safe in this supplement?

    Medium

    Silicon Dioxide is used here as stabilizer. Silicon dioxide is used as an anti-caking agent in this supplement. While generally recognized as safe, it is a processed ingredient.

    Role in formula: stabilizer

    Original: Silicon Dioxide

    Read the full ingredient profile for Silicon Dioxide

  • Is Sodium Molybdate safe in this supplement?

    Medium

    Sodium Molybdate is used here as base. Sodium molybdate is a source of molybdenum, a trace mineral necessary for certain enzymatic reactions. Its presence is beneficial but should be consumed in moderation.

    Role in formula: base

    Original: Sodium Molybdate

    Read the full ingredient profile for Sodium Molybdate

  • Is Sodium Selenite safe in this supplement?

    Medium

    Sodium Selenite is used here as base. Sodium selenite is a source of selenium, an essential mineral with antioxidant properties. While beneficial, excessive intake can lead to toxicity.

    Role in formula: base

    Original: Sodium Selenite

    Read the full ingredient profile for Sodium Selenite

  • Is Stearic Acid safe in this supplement?

    Medium

    Stearic Acid is used here as emulsifier. Stearic acid is a fatty acid used as an emulsifier in this supplement. While generally safe, it is a processed ingredient that may raise concerns for some consumers.

    Role in formula: emulsifier

    Original: Stearic Acid

    Read the full ingredient profile for Stearic Acid

  • Is Thiamine Mononitrate safe in this supplement?

    Good

    Thiamine Mononitrate is used here as base. Thiamine mononitrate is a form of vitamin B1 that supports energy metabolism. Its inclusion is beneficial for overall health.

    Role in formula: base

    Original: Thiamine Mononitrate

    Read the full ingredient profile for Thiamine Mononitrate

  • Is Vitamin A Acetate safe in this supplement?

    Good

    Vitamin A Acetate is used here as base. Vitamin A acetate is a form of vitamin A that supports vision and immune function. Its presence in this supplement is beneficial for overall health.

    Role in formula: base

    Original: Vitamin A Acetate

    Read the full ingredient profile for Vitamin A Acetate

  • Is Zinc Oxide safe in this supplement?

    Good

    Zinc Oxide is used here as base. Zinc oxide is a mineral that supports immune function and skin health. Its inclusion is beneficial for overall health.

    Role in formula: base

    Original: Zinc Oxide

    Read the full ingredient profile for Zinc Oxide

How we score

Our safety scores and ingredient breakdowns are based on regulatory and scientific sources. See Data sources & methodology and How Zerotox works for full details.

Product info

Product ID: 2381814

More from this brand: Bayer products in Zerotox

Similar products: supplement in Zerotox database

Allergens detected: gelatin

Report / complain: You may report errors or complain about this product or its formulation to hello [at] zeroto.app . Published for transparency.

Frequently asked questions

Bayer — One A Day has a Zerotox safety score of 60 / 100. Higher scores mean fewer concerning ingredients. Scores are informational only and do not constitute professional advice; always read the label and consult a qualified professional.
This depends on the ingredient profile. People with sensitive skin or scalp, users avoiding fragrance, sulfates or animal-derived ingredients, and cautious shoppers should review the breakdown above before buying. Scores are informational only and do not constitute professional advice; always read the label and consult a qualified professional.
The composition includes several synthetic additives such as maltodextrin and gelatin, which raise quality concerns. While vitamins like ascorbic acid and cyanocobalamin are beneficial, the presence of synthetic ingredients and potential allergens like gelatin lower the overall safety assessment. Scores are informational only and do not constitute professional advice; always read the label and consult a qualified professional.
This product includes positive or neutral ingredients such as: calcium carbonate, magnesium oxide, ascorbic acid. See the Ingredients section above.
Zerotox scores are based on ingredients and are not medical advice. Check the breakdown above and consult a healthcare provider. Scores are informational only and do not constitute professional advice; always read the label and consult a qualified professional.
This product is flagged for: Contains gelatin, which poses allergen risks for individuals with dietary restrictions.; Maltodextrin is a processed ingredient that raises concerns about its impact on blood sugar levels.. See the Concerns and Ingredients sections above.
We do not detect parabens in this product's listed ingredients. Always check the label as formulations change.
Our analysis notes: Contains essential vitamins like ascorbic acid and cyanocobalamin, which are important for overall health.; Includes minerals such as calcium carbonate and magnesium oxide, contributing to dietary needs.. See the Pros section above.
Our analysis indicates animal-derived ingredients may be present in this product. See the Ingredients section and the label for details.
Bayer — One A Day has a Zerotox score of 60 / 100 among supplements products. See the full breakdown above.
Our analysis flags sulfate in this product. See the Ingredients section above. Search products with this ingredient.
Bayer — One A Day has a Zerotox safety score of 60 / 100. Check the ingredient breakdown above. More Bayer products. Scores are informational only and do not constitute professional advice; always read the label and consult a qualified professional.

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