Sentry Men by 21st Century — Ingredients, Evidence & Safety

🟢 99/100

This product looks safe

Folate: 333mg is 333.0× the Tolerable Upper Intake Level (1.0mg)
70% of ingredients have research evidence

C Label Compliance Grade

Product Label

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Safety Alerts

⚠️ Folate: 333mg is 333.0× the Tolerable Upper Intake Level (1.0mg)

Label Data

1 Tablet(s) Serving Size

120 Servings

Other Combinations Product Type

70% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin A

1050 mcg (117% DV)

Vitamin C

90 mg (100% DV)

Vitamin D3

25 mcg (125% DV)

✅ 1.7× RDA — within safe limits 📚 604 studies (Tier A: 16, B: 251)

RDA 0.015mg This product: 0.025mg UL 0.1mg

Vitamin E

20.3 mg (135% DV)

✅ 1.4× RDA — within safe limits 📚 177 studies (Tier A: 3, B: 90)

RDA 15mg This product: 20.3mg UL 1000mg

Vitamin K

60 mcg (50% DV)

✅ Within RDA (0.5× RDA of 0.12 mg) 📚 273 studies (Tier A: 9, B: 175)

RDA 0.12mg This product: 0.06mg

Thiamine

1.2 mg (100% DV)

✅ Within RDA (1.0× RDA of 1.2 mg) 📚 76 studies (Tier A: 0, B: 33)

RDA 1.2mg This product: 1.2mg

Riboflavin

1.3 mg (100% DV)

✅ Within RDA (1.0× RDA of 1.3 mg) 📚 12 studies (Tier A: 0, B: 1)

RDA 1.3mg This product: 1.3mg

Niacin

16 mg (100% DV)

✅ 1.1× RDA — within safe limits 📚 193 studies (Tier A: 5, B: 63)

RDA 14mg This product: 16mg UL 35mg

Vitamin B6

2 mg (118% DV)

✅ 1.5× RDA — within safe limits 📚 113 studies (Tier A: 3, B: 35)

RDA 1.3mg This product: 2mg UL 100mg

Folate

333 mcg DFE (83% DV)

⚠️ Exceeds Tolerable Upper Intake Level by 333.0× (UL: 1.0 mg) 📚 225 studies (Tier A: 10, B: 105)

RDA 0.4mg This product: 333mg UL 1.0mg

Vitamin B12

6 mcg (250% DV)

✅ 2.5× RDA — within safe limits 📚 138 studies (Tier A: 1, B: 44)

RDA 0.0024mg This product: 0.006mg

Biotin

40 mcg (133% DV)

✅ 1.3× RDA — within safe limits 📚 26 studies (Tier A: 0, B: 11)

RDA 0.03mg This product: 0.04mg

Pantothenic Acid

15 mg (300% DV)

✅ 3.0× RDA — within safe limits 📚 1 studies — no high-quality reviews

RDA 5mg This product: 15mg

Calcium

210 mg (16% DV)

Iron

8 mg (44% DV)

Phosphorus

20 mg (2% DV)

📊 Market median: 99.0mg (503 products) 📚 12 studies (Tier A: 0, B: 3)

RDA 700mg This product: 20mg UL 4000mg

Iodine

150 mcg (100% DV)

✅ Within RDA (1.0× RDA of 0.15 mg) 📚 243 studies (Tier A: 4, B: 133)

RDA 0.15mg This product: 0.15mg UL 1.1mg

Magnesium

100 mg (24% DV)

📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)

This product: 100mg

Zinc

11 mg (100% DV)

✅ Within RDA (1.0× RDA of 11 mg) 📚 258 studies (Tier A: 6, B: 134)

RDA 11mg This product: 11mg UL 40mg

Selenium

100 mcg (182% DV)

✅ 1.8× RDA — within safe limits 📚 172 studies (Tier A: 0, B: 67)

RDA 0.055mg This product: 0.1mg UL 0.4mg

Copper

0.9 mg (100% DV)

✅ Within RDA (1.0× RDA of 0.9 mg) 📚 36 studies (Tier A: 0, B: 11)

RDA 0.9mg This product: 0.9mg UL 10mg

Manganese

2.3 mg (100% DV)

✅ Within RDA (1.0× RDA of 2.3 mg) 📚 8 studies — no high-quality reviews

RDA 2.3mg This product: 2.3mg UL 11mg

Chromium

35 mcg (100% DV)

✅ Within RDA (1.0× RDA of 0.035 mg) 📚 197 studies (Tier A: 1, B: 55)

RDA 0.035mg This product: 0.035mg

Molybdenum

50 mcg (111% DV)

✅ 1.1× RDA — within safe limits 📚 2 studies — no high-quality reviews

RDA 0.045mg This product: 0.05mg UL 2mg

Chloride

72 mg (3% DV)

📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)

This product: 72mg

Potassium

80 mg (2% DV)

Lycopene

600 mcg

📊 Market median: 10.0mg (35 products) 📚 5 studies (Tier A: 0, B: 2)

This product: 0.6mg

Other Ingredients

Starch Cellulose Stearic Acid FD&C Yellow #6 Citric Acid Croscarmellose Sodium Gelatin Magnesium Silicate Magnesium Stearate Maltodextrin Polyethylene Glycol Polyvinyl Alcohol Silicon Dioxide Titanium Dioxide

Label Claims — Verification

❓ Nutrient

❓ All Other

All Other (99% of products) Structure/Function (76% of products) Nutrient (58% of products)

Target Groups

Adult Male (18-50 Years) Gluten Free

Product Information

📋 Directions for Use

Directions: As a dietary supplement, adults take one (1) tablet daily with any meal or as directed by your healthcare provider.

⚠️ Warnings & Precautions

Do not exceed recommended dosage. Individual results may vary. Stop use and contact a physician if adverse reactions occur. Do not use if product appears to be tampered with or seal is broken.

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

Keep out of reach of children.

Important information: Extended use of high levels of Vitamin A (excluding Beta-Carotene as the source) may increase the risk to adults of developing osteoporosis. Do not use this product if using other Vitamin A supplements.

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

🧪 Formulation Notes

Gluten free

No added yeast or artificial flavors. Gluten free.

Men

Additional Information

Compare VS. Centrum Men

Store at room temperature.

Guaranteed Quality Laboratory Tested

Product Details

UPC / SKU 7 40985 22673 5

DSLD Entry Date 2025-01-23

Product Type Other Combinations

Form Tablet or Pill

Brand 21st Century

DSLD ID 326351

Data Updated 2026-04-11

Research Evidence

337 Research Sources

54 Avg Quality Score

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 Cochrane

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 Cochrane

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 Cochrane

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 Cochrane

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 Cochrane

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 →