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Mega-One

product on market Tablet or Pill Source Naturals Safety: 99/100
99/100

This product looks safe

  • Niacinamide: 85mg is 2.4× the Tolerable Upper Intake Level (35mg)
  • 58% of ingredients have research evidence
C Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

This profile contains essential vitamins A, C, D3, and E, which are supported by strong evidence for maintaining immune function and antioxidant defense. These nutrients contribute to cellular health and bone maintenance. The formulation maintains a high safety score, indicating a low risk of adverse effects for most users.

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

Alerts

Safety Alerts

Niacinamide: 85mg is 2.4× the Tolerable Upper Intake Level (35mg)

Label

Product Label

Label for Mega-One
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Tablet(s)
Serving Size
60
Servings
Other Combinations
Product Type
58%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Total Carbohydrates
1 Gram(s) (1% DV)
Vitamin A
12000 IU (240% DV)
Vitamin C
250 mg (416% DV)
400 IU (100% DV)
Within RDA (0.7× RDA) 608 studies (A:16, B:251)
100 IU (333% DV)
4.5× RDA — above typical dose (UL: 1000 mg) 179 studies (A:3, B:90)
85 mg (5667% DV)
70.8× RDA — above typical dose 76 studies (A:0, B:33)
85 mg (5000% DV)
65.4× RDA — above typical dose 13 studies (A:0, B:1)
85 mg (425% DV)
Exceeds UL by 2.4× (UL: 35 mg) 196 studies (A:5, B:63)
85 mg (4250% DV)
65.4× RDA — above typical dose (UL: 100 mg) 114 studies (A:3, B:35)
420 mcg (105% DV)
Within RDA (1.0× RDA) 226 studies (A:10, B:105)
85 mcg (1417% DV)
35.4× RDA — above typical dose 139 studies (A:1, B:44)
85 mcg (28% DV)
2.8× RDA — within safe limits 27 studies (A:0, B:11)
85 mg (850% DV)
17.0× RDA — above typical dose 2 studies — no high-quality reviews
Calcium
40 mg (4% DV)
Iron
11 mg (61% DV)
150 mcg (100% DV)
Within RDA (1.0× RDA) 245 studies (A:4, B:133)
20 mg (5% DV)
Market median: 500.0mg (1 products) 316 studies (A:8, B:159)
15 mg (100% DV)
1.4× RDA — within safe limits 263 studies (A:6, B:134)
50 mcg (71% DV)
Within RDA (0.9× RDA) 173 studies (A:0, B:67)
1 mg (50% DV)
1.1× RDA — within safe limits 37 studies (A:0, B:11)
6 mg (300% DV)
2.6× RDA — within safe limits 9 studies — no high-quality reviews
100 mcg (83% DV)
2.9× RDA — within safe limits 199 studies (A:1, B:55)
100 mcg (133% DV)
2.2× RDA — within safe limits 3 studies — no high-quality reviews
Potassium
10 mg (1% DV)
Within RDA (0.2× RDA) 38 studies (A:1, B:7)
Market median: 500.0mg (9 products) 7 studies — no high-quality reviews
85 mg
Market median: 550.0mg (217 products) 29 studies (A:0, B:5)
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)
21 mg
Market median: 500.0mg (19 products)
Hesperidin
5 mg
1 mg
Market median: 3.0mg (58 products) 3 studies — no high-quality reviews

Other Ingredients

Stearic Acid Modified Cellulose Gum Colloidal Silicon Dioxide Magnesium Stearate
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested use: 1 tablet daily with a meal.

Mega-One is a potent one-tablet-a-day multi-vitamin.

Warnings & Precautions

Contains soy.

Warning: Do not use if you are pregnant, may become pregnant, or breastfeeding.

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

Do not use if either tamper-evident seal is broken or missing.

Keep out of the reach of children.

Formulation Notes

High potency multi-vitamin with minerals

Metadata

Product Details

UPC / SKU0 21078 00008 2
DSLD Entry Date2023-10-24
Product TypeOther Combinations
FormTablet or Pill
BrandSource Naturals
DSLD ID295991
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.