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Energy

product on market Tablet or Pill Bayer One A Day Safety: 99/100
99/100

This product looks safe

  • Niacin: 40mg is 1.1× the Tolerable Upper Intake Level (35mg)
  • 71% of ingredients have research evidence
C Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

This profile contains a blend of essential fat-soluble and water-soluble vitamins. Strong evidence supports their roles in immune function, bone health, and antioxidant protection. The overall safety profile is high, though evidence coverage for this specific combination is limited.

AI-generated summary based on research evidence. Not medical advice.

Alerts

Safety Alerts

Niacin: 40mg is 1.1× the Tolerable Upper Intake Level (35mg)

Label

Product Label

Label for Energy
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Tablet(s)
Serving Size
Other Combinations
Product Type
71%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin A
3500 IU (70% DV)
Vitamin C
60 mg (100% DV)
400 IU (100% DV)
Within RDA (0.7× RDA) 608 studies (A:16, B:251)
22.5 IU (75% DV)
Within RDA (1.0× RDA) 179 studies (A:3, B:90)
25 mcg (31% DV)
Within RDA (0.2× RDA) 275 studies (A:9, B:175)
3 mg (200% DV)
2.5× RDA — within safe limits 76 studies (A:0, B:33)
3.4 mg (200% DV)
2.6× RDA — within safe limits 13 studies (A:0, B:1)
40 mg (200% DV)
Exceeds UL by 1.1× (UL: 35 mg) 196 studies (A:5, B:63)
4 mg (200% DV)
3.1× RDA — above typical dose (UL: 100 mg) 114 studies (A:3, B:35)
400 mcg (100% DV)
Within RDA (1.0× RDA) 226 studies (A:10, B:105)
12 mcg (200% DV)
5.0× RDA — above typical dose 139 studies (A:1, B:44)
300 mcg (100% DV)
10.0× RDA — above typical dose 27 studies (A:0, B:11)
10 mg (100% DV)
2.0× RDA — within safe limits 2 studies — no high-quality reviews
Calcium
250 mg (25% DV)
Iron
9 mg (50% DV)
150 mcg (100% DV)
Within RDA (1.0× RDA) 245 studies (A:4, B:133)
40 mg (10% DV)
Within RDA (0.1× RDA) 316 studies (A:8, B:159)
15 mg (100% DV)
1.4× RDA — within safe limits 263 studies (A:6, B:134)
45 mcg (64% DV)
Within RDA (0.8× RDA) 173 studies (A:0, B:67)
2 mg (100% DV)
2.2× RDA — within safe limits 37 studies (A:0, B:11)
2 mg (100% DV)
Within RDA (0.9× RDA) 9 studies — no high-quality reviews
100 mcg (83% DV)
2.9× RDA — within safe limits 199 studies (A:1, B:55)
25 mcg (33% DV)
Within RDA (0.6× RDA) 3 studies — no high-quality reviews
90 mg
Market median: 180.0mg (239 products) 49 studies (A:1, B:19)

Other Ingredients

Calcium Carbonate Microcrystalline Cellulose Caffeine Magnesium Oxide Ascorbic Acid Niacinamide Ferrous Fumarate Less than 2% of:
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions: Adults: One tablet daily, with food.

Warnings & Precautions

Warning: Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6. Keep this product out of reach of children. In case of accidental overdose, call a doctor or poison control center immediately.

This product contains about as much caffeine as a cup of coffee (90 mg).

For adult use only.

If pregnant, breast-feeding or taking medication, ask a health professional before use.

Keep out of reach of children

Do not use this product if printed safety seal bearing "Bayer Health Care" under cap is torn or missing.

Formulation Notes

Formulated to support: Physical energy with high levels of B-Vitamins to help convert food to fuel Mental alertness with Caffeine Immune health with Vitamins C, A, Selenium and Zinc Bone health with Calcium, Vitamin D and Magnesium Refers to Vitamins B1, B2, B6, B12, Niacin, Folic Acid, Biotin and Pantothenic Acid.

This product contains about as much caffeine as a cup of coffee (90 mg).

That's why One A Day Energy is a complete multivitamin with key nutrients, including B-vitamins to help support physical energy by converting food to fuel, plus Caffeine to help support mental alertness.

Does not contain aspirin.

Additional Information

Complete multivitamin with more Formulated to support: Physical energy Mental alertness Immune health Bone health

Questions or comments? Please call 1-800-800-4793 (Mon - Fri 9AM - 5PM EST) Made in the USA of US & imported materials

A complete multivitamin that supports energy Being both physically and mentally active is important for supporting your healthy lifestyle.

Child resistant cap

83918950 3141

Supports physical energy & mental alertness

Metadata

Product Details

UPC / SKU0 16500 52586 8
DSLD Entry Date2018-06-25
Product TypeOther Combinations
FormTablet or Pill
BrandBayer One A Day
DSLD ID178021
Data Updated2026-04-11
Research

Research Evidence

337
Research Sources
54
Avg Quality
161
Meta Analysis
68
Systematic Review
51
Rct
48
Clinical Trial
2
Other
2
Regulatory Source
1
Narrative Review
1
Cochrane Review
1
Guideline
1
Openfda Safety
A Vitamin A supplementation for preventing morbidity and mortality in children from six months to five years of age
Meta Analysis The Cochrane database of systematic reviews 2017 PubMed DOI
A Vitamin A supplementation for the prevention of morbidity and mortality in infants six months of age or less
Meta Analysis The Cochrane database of systematic reviews 2011 PubMed DOI
A Vitamin A supplementation for reducing the risk of mother-to-child transmission of HIV infection
Meta Analysis The Cochrane database of systematic reviews 2011 PubMed DOI
A Vitamin A supplements for preventing mortality, illness, and blindness in children aged under 5: systematic review and meta-analysis
Meta Analysis BMJ (Clinical research ed.) 2011 PubMed DOI
A Fortification of staple foods with vitamin A for vitamin A deficiency
Systematic Review The Cochrane database of systematic reviews 2019 PubMed DOI
A Vitamin A supplementation for the prevention of morbidity and mortality in infants one to six months of age
Narrative Review The Cochrane database of systematic reviews 2016 PubMed DOI
A Vitamin A and fish oils for preventing the progression of retinitis pigmentosa
Meta Analysis The Cochrane database of systematic reviews 2020 PubMed DOI
A Exercise training-induced changes in exerkine concentrations may be relevant to the metabolic control of type 2 diabetes mellitus patients: A systematic review and meta-analysis of randomized controlled trials
Meta Analysis Journal of sport and health science 2023 PubMed DOI
A Food fortification with multiple micronutrients: impact on health outcomes in general population
Meta Analysis The Cochrane database of systematic reviews 2019 PubMed DOI
A Oral vitamin A supplements to prevent acute upper respiratory tract infections in children up to seven years of age
Meta Analysis The Cochrane database of systematic reviews 2024 PubMed DOI
View all evidence for Vitamin A →
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.