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Stress B with Iron

product on market Tablet or Pill 21st Century Safety: 94/100
94/100

This product looks safe

  • Niacin: 100mg is 2.9× the Tolerable Upper Intake Level (35mg)
  • Folate: 667mg is 667.0× the Tolerable Upper Intake Level (1.0mg)
  • 67% of ingredients have research evidence
D Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

This formula contains B vitamins and antioxidants, which have strong evidence for supporting energy metabolism and cellular protection. Thiamine, riboflavin, and niacin are essential for neurological function and metabolic processes. Research indicates these ingredients are generally safe and effective for maintaining overall wellness.

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

Alerts

Safety Alerts

Niacin: 100mg is 2.9× the Tolerable Upper Intake Level (35mg)

Folate: 667mg is 667.0× the Tolerable Upper Intake Level (1.0mg)

Label

Product Label

Label for Stress B with Iron
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Tablet(s)
Serving Size
Multi-Vitamin and Mineral (MVM)
Product Type
67%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin C
500 mg (556% DV)
14 mg (90% DV)
Within RDA (0.9× RDA) 179 studies (A:3, B:90)
10 mg (833% DV)
8.3× RDA — above typical dose 76 studies (A:0, B:33)
10 mg (769% DV)
7.7× RDA — above typical dose 13 studies (A:0, B:1)
100 mg (625% DV)
Exceeds UL by 2.9× (UL: 35 mg) 196 studies (A:5, B:63)
5 mg (294% DV)
3.8× RDA — above typical dose (UL: 100 mg) 114 studies (A:3, B:35)
667 mcg DFE (167% DV)
Exceeds UL by 667.0× (UL: 1.0 mg) 226 studies (A:10, B:105)
12 mcg (500% DV)
5.0× RDA — above typical dose 139 studies (A:1, B:44)
45 mcg (150% DV)
1.5× RDA — within safe limits 27 studies (A:0, B:11)
20 mg (400% DV)
4.0× RDA — above typical dose 2 studies — no high-quality reviews
Calcium
75 mg (6% DV)
Iron
18 mg (100% DV)

Other Ingredients

Starch Hydroxypropyl Methylcellulose Contains Less Than 2% of
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions: As a vitamin supplement, adults take one (1) tablet daily with any meal or as directed by a healthcare provider. Do not exceed recommended dosage.

Combined with a healthy diet and plenty of rest, 21st Century Stress B helps provide the extra nutritional support your body may need.

Warnings & Precautions

Do not exceed recommended dosage.

Warning: Consult a healthcare provider prior to use if pregnant, nursing, on medications, have a medical condition or are planning a medical procedure.

Stop use and contact a physician if adverse reactions occur.

Keep out of reach of children.

Do not use if product appears to be tampered with or seal is broken.

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.

Formulation Notes

No added Yeast, Preservatives or Artificial Flavors.

Stress B with Iron

Gluten free

Additional Information

Individual results may vary.

Store at room temperature.

Energy & Immune Support

Gluten free

Periods of stress can be taxing on the body.

Guaranteed quality Laboratory tested

Metadata

Product Details

UPC / SKU7 40985 22342 0
DSLD Entry Date2019-08-23
Product TypeMulti-Vitamin and Mineral (MVM)
FormTablet or Pill
Brand21st Century
DSLD ID205888
Data Updated2026-04-11
Research

Research Evidence

566
Research Sources
56
Avg Quality
240
Meta Analysis
100
Clinical Trial
74
Systematic Review
71
Guideline
58
Rct
11
Cochrane Review
4
Regulatory Source
2
Other
2
Narrative Review
1
Observational
1
Openfda Safety
A Systematic review and meta-analysis of intravenous iron therapy for patients with heart failure and iron deficiency
Meta Analysis Nature medicine 2025 PubMed DOI
A Intermittent iron supplementation for reducing anaemia and its associated impairments in adolescent and adult menstruating women
Meta Analysis The Cochrane database of systematic reviews 2019 PubMed DOI
A Oral or parenteral iron supplementation to reduce deferral, iron deficiency and/or anaemia in blood donors
Meta Analysis The Cochrane database of systematic reviews 2014 PubMed DOI
A Serum or plasma ferritin concentration as an index of iron deficiency and overload
Meta Analysis The Cochrane database of systematic reviews 2021 PubMed DOI
A Non-invasive diagnostic tests for Helicobacter pylori infection
Meta Analysis The Cochrane database of systematic reviews 2018 PubMed DOI
A Hypoxia-inducible factor stabilisers for the anaemia of chronic kidney disease
Meta Analysis The Cochrane database of systematic reviews 2022 PubMed DOI
A Wheat flour fortification with iron and other micronutrients for reducing anaemia and improving iron status in populations
Meta Analysis The Cochrane database of systematic reviews 2021 PubMed DOI
A Fortification of condiments and seasonings with iron for preventing anaemia and improving health
Meta Analysis The Cochrane database of systematic reviews 2023 PubMed DOI
A Screening and Supplementation for Iron Deficiency and Iron Deficiency Anemia During Pregnancy: US Preventive Services Task Force Recommendation Statement.
Guideline JAMA 2024 PubMed DOI
A Psychiatric and cognitive outcomes of iron supplementation in non-anemic children, adolescents, and menstruating adults: A meta-analysis and systematic review
Meta Analysis Neuroscience and biobehavioral reviews 2025 PubMed DOI
View all evidence for Iron →
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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.