Bayer One A Day Men's Complete Multivitamin supplement bottle
Bayer One A Day

Men's Complete Multivitamin

What We Researched
23 active ingredients analyzed · 36 inactive ingredients decoded · 1 brand certification checked · 2 retailers compared · Last updated: Mar 2026
77
Product Score Fair
64
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin A (as Beta-Carotene) 900 mcg 100%
Vitamin C 99 mg 110%
Vitamin D 25 mcg 125%
Vitamin E 15 mg 100%
Vitamin K 30 mcg 25%
Thiamine (as Vitamin B1) 1.07 mg 89%
Riboflavin (as Vitamin B2) 1.43 mg 110%
Niacin 17.6 mg 110%
Vitamin B6 2.17 mg 128%
Folate 400 mcg DFE 100%
Vitamin B12 6.24 mcg 260%
Biotin 43 mcg 143%
Pantothenic Acid 15.5 mg 310%
Calcium 210 mg 16%
Iron 0 mg 0%
Iodine 150 mcg 100%
Magnesium 120 mg 29%
Zinc 11 mg 100%
Selenium 55 mcg 100%
Copper 0.9 mg 100%
Manganese 2.3 mg 100%
Chromium 35 mcg 100%
Lycopene 300 mcg
Bioavailability Very Good

Absorption Rating

  • Vitamin A (as Beta-Carotene) Fair
  • Vitamin C Fair
  • Vitamin D Good
  • Vitamin E Good
  • Vitamin K Good
  • Thiamine (as Vitamin B1) Good
  • Riboflavin (as Vitamin B2) Good
  • Niacin Good
  • Vitamin B6 Fair
  • Folate Fair
  • Vitamin B12 Fair
  • Biotin Good
  • Pantothenic Acid Good
  • Calcium Good
  • Iron Fair
  • Iodine Good
  • Magnesium Good
  • Zinc Fair
  • Selenium Good
  • Copper Fair
  • Manganese Good
  • Chromium Fair
  • Lycopene Good
Other Ingredients Good

Fillers & Additives

  • Calcium Carbonate
  • Magnesium Oxide
  • Microcrystalline Cellulose
  • Ascorbic Acid
  • Maltodextrin
  • DL-Alpha-Tocopheryl Acetate
  • Beta-Carotene
  • Biotin
  • Cholecalciferol
  • Chromium Chloride
  • Copper Sulfate
  • Croscarmellose Sodium
  • Cyanocobalamin
  • D-Calcium Pantothenate
  • Folic Acid
  • Gelatin
  • Hydroxypropyl Methylcellulose
  • Inulin
  • Lycopene
  • Manganese Sulfate
  • Medium Chain Triglycerides
  • Niacinamide
  • Phylloquinone
  • Polydextrose
  • Polyvinylpyrrolidone
  • Potassium Iodide
  • Pyridoxine Hydrochloride
  • Riboflavin
  • Silicon Dioxide
  • Sodium Selenite
  • Stearic Acid
  • Talc High
  • Thiamine Mononitrate
  • Triacetin
  • Vitamin A Acetate
  • Zinc Oxide
Efficacy Very Good

Dosage Analysis

  • Vitamin A (as Beta-Carotene) 900 mcg Effective
  • Vitamin C 99 mg Effective
  • Vitamin D 25 mcg Effective
  • Vitamin E 15 mg Effective
  • Vitamin K 30 mcg Under-dosed
  • Thiamine (as Vitamin B1) 1.07 mg Effective
  • Riboflavin (as Vitamin B2) 1.43 mg Effective
  • Niacin 17.6 mg Effective
  • Vitamin B6 2.17 mg Effective
  • Folate 400 mcg DFE Effective
  • Vitamin B12 6.24 mcg Effective
  • Biotin 43 mcg Effective
  • Pantothenic Acid 15.5 mg Effective
  • Calcium 210 mg Under-dosed
  • Iron 0 mg Under-dosed
  • Iodine 150 mcg Effective
  • Magnesium 120 mg Under-dosed
  • Zinc 11 mg Effective
  • Selenium 55 mcg Effective
  • Copper 0.9 mg Effective
  • Manganese 2.3 mg Effective
  • Chromium 35 mcg Effective
  • Lycopene 300 mcg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Vitamin A (as Beta-Carotene) 900 mcg 100%
Vitamin C 99 mg 110%
Vitamin D 25 mcg 125%
Vitamin E 15 mg 100%
Vitamin K 30 mcg 25%
Thiamine (as Vitamin B1) 1.07 mg 89%
Riboflavin (as Vitamin B2) 1.43 mg 110%
Niacin 17.6 mg 110%
Vitamin B6 2.17 mg 128%
Folate 400 mcg DFE 100%
Vitamin B12 6.24 mcg 260%
Biotin 43 mcg 143%
Pantothenic Acid 15.5 mg 310%
Calcium 210 mg 16%
Iron 0 mg 0%
Iodine 150 mcg 100%
Magnesium 120 mg 29%
Zinc 11 mg 100%
Selenium 55 mcg 100%
Copper 0.9 mg 100%
Manganese 2.3 mg 100%
Chromium 35 mcg 100%
Lycopene 300 mcg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Calcium Carbonate Safe

Acts as a filler and provides supplemental calcium.

Magnesium Oxide Generally_safe

It is used to provide magnesium, an essential mineral.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Ascorbic Acid Safe

Prevents oxidation and provides vitamin C.

Maltodextrin Generally_safe

Helps carry and stabilize active ingredients. Provides bulk.

DL-Alpha-Tocopheryl Acetate Generally_safe

It is used as a source of vitamin E and as an antioxidant.

Beta-Carotene Safe

Provides natural color and additional nutritional value.

Biotin Safe

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

Cholecalciferol Safe

It is used to supplement vitamin D levels.

Chromium Chloride Generally_safe

It is added to supplements to provide chromium, an essential trace mineral.

Copper Sulfate Generally_safe

It is added to supplements to provide copper, an essential trace mineral.

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Cyanocobalamin Safe

It is used as a source of vitamin B12.

D-Calcium Pantothenate Safe

It is added to supplements as a source of vitamin B5.

Folic Acid Safe

It is used as a source of folate.

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Hydroxypropyl Methylcellulose Safe

It is used as a coating for tablets and capsules.

Inulin Safe

It is used as a prebiotic fiber and to add bulk to supplements.

Lycopene Generally_safe

It is included for its antioxidant properties.

Manganese Sulfate Generally_safe

It provides a source of manganese.

Medium Chain Triglycerides Safe

Enhances absorption of fat-soluble vitamins.

Niacinamide Safe

It is included for its potential health benefits.

Phylloquinone Safe

It is added as a source of vitamin K.

Polydextrose Generally_safe

It is used as a filler, to add bulk, and as a prebiotic fiber.

Polyvinylpyrrolidone Generally_safe

It is used to bind ingredients together.

Potassium Iodide Generally_safe

It provides iodine, an essential mineral.

Pyridoxine Hydrochloride Safe

It is used as a source of vitamin B6.

Riboflavin Safe

It is used as a source of vitamin B2.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Sodium Selenite Generally_safe

It is added to supplements to provide selenium, an essential trace mineral.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Talc Avoid

It is used to improve powder flow and prevent clumping.

Thiamine Mononitrate Safe

It is used as a source of vitamin B1.

Triacetin Generally_safe

It is used as a solvent or humectant.

Vitamin A Acetate Generally_safe

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

Zinc Oxide Generally_safe

It is used as a source of zinc.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$18$17$16$15$14 $15.72
Target

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Bayer One A Day

Founded 1940 · Whippany, New Jersey, USA · 72 products · oneaday.com/

Certifications

1 certification
Consumerlab Verified Source

Transparency

3 claims
Third Party Testing Claim — Claimed Source
In House Testing — Claimed Source

Violation History

3 incidents
Lawsuit Falsely labeling 'Natural Fruit Bites Multivitamin' as 'natural' despite containing synthetic ingredients.2023Source
Lawsuit Mislabeled 'One A Day' chewable vitamins that require a serving size of two gummies.2022Source
Lawsuit Deceptive claims that One A Day Men's multivitamins could reduce the risk of prostate cancer.2010Source
Related Supplements
Frequently Asked Questions
Is Bayer One A Day Men's Complete Multivitamin a good supplement?

Bayer One A Day Men's Complete Multivitamin received a product quality score of 77/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 23 active ingredients with 60 servings per container. Of the 36 inactive ingredients, 21 are rated safe and 0 are flagged for review. The manufacturer, Bayer One A Day, holds a brand trust score of 64/100 with 1 verified certifications including Consumerlab.

What are the ingredients in Bayer One A Day Men's Complete Multivitamin?

Bayer One A Day Men's Complete Multivitamin contains 23 active ingredients: Vitamin A (as Beta-Carotene) (900 mcg), Vitamin C (99 mg), Vitamin D (25 mcg), Vitamin E (15 mg), Vitamin K (30 mcg), Thiamine (as Vitamin B1) (1.07 mg), and 17 more. Notable high-dose ingredients include Vitamin B12 at 260% DV, Pantothenic Acid at 310% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Bayer One A Day Men's Complete Multivitamin safe to take?

Bayer One A Day Men's Complete Multivitamin 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.

Is Bayer One A Day a trustworthy supplement brand?

Bayer One A Day receives a brand trust score of 64/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1940 and headquartered in Whippany, New Jersey, USA, the company offers 72 products in their lineup. They hold 1 verified certifications including Consumerlab. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Bayer One A Day has 3 historical regulatory incidents on record, which are factored into the trust score.

How much vitamin d3 should i take daily?

The optimal dosage depends on your individual health needs, age, sex, and current nutrient levels. Recommended daily amounts are established by health authorities but may vary from therapeutic doses used in clinical research. It's important to check the Supplement Facts label for the exact amount per serving and compare it against the % Daily Value. Some supplements provide mega-doses well above the Daily Value, which may not be necessary and in some cases could be harmful — particularly for fat-soluble vitamins (A, D, E, K) that accumulate in the body. GoodSupp's efficacy analysis evaluates whether a product's dosages align with clinically studied amounts. Always consult your healthcare provider for personalized dosage recommendations.

What does vitamin d do?

This is an important question for supplement consumers. The dietary supplement industry is largely self-regulated, which means product quality, ingredient transparency, and safety practices vary significantly between brands and products. The most reliable way to evaluate any supplement is to check for third-party testing certifications, review the full ingredient list and dosages, and research the brand's regulatory track record. GoodSupp's database of over 250,000 analyzed products provides independent quality scores, ingredient safety ratings, and brand trust reports to help you make evidence-based decisions.

How much vitamin d3 per day for a woman?

The optimal dosage depends on your individual health needs, age, sex, and current nutrient levels. Recommended daily amounts are established by health authorities but may vary from therapeutic doses used in clinical research. It's important to check the Supplement Facts label for the exact amount per serving and compare it against the % Daily Value. Some supplements provide mega-doses well above the Daily Value, which may not be necessary and in some cases could be harmful — particularly for fat-soluble vitamins (A, D, E, K) that accumulate in the body. GoodSupp's efficacy analysis evaluates whether a product's dosages align with clinically studied amounts. Always consult your healthcare provider for personalized dosage recommendations.

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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.