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Resistance Support Formula

product on market Tablet or Pill Douglas Laboratories Safety: 96/100
96/100

This product looks safe

  • Niacin/Niacinamide: 120mg is 3.4× the Tolerable Upper Intake Level (35mg)
  • Selenium: 200mg is 500.0× the Tolerable Upper Intake Level (0.4mg)
  • Manganese: 15mg is 1.4× the Tolerable Upper Intake Level (11mg)
  • 59% of ingredients have research evidence
F Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

This formula contains a blend of essential vitamins, including A, C, D3, and E, which have strong evidence for supporting immune function and antioxidant defense. Thiamine contributes to cellular energy metabolism. Research across these nutrients is well-established, though the overall evidence coverage for this specific combination is limited.

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

Alerts

Safety Alerts

Niacin/Niacinamide: 120mg is 3.4× the Tolerable Upper Intake Level (35mg)

Selenium: 200mg is 500.0× the Tolerable Upper Intake Level (0.4mg)

Manganese: 15mg is 1.4× the Tolerable Upper Intake Level (11mg)

Label

Product Label

Label for Resistance Support Formula
Open Full PDF View on NIH DSLD →
Details

Label Data

4 Tablet(s)
Serving Size
21
Servings
Other Combinations
Product Type
59%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin A
2000 IU (400% DV)
Vitamin C
1000 mg (1667% DV)
50 IU (13% DV)
Within RDA (0.1× RDA) 608 studies (A:16, B:251)
200 IU (667% DV)
8.9× RDA — above typical dose (UL: 1000 mg) 179 studies (A:3, B:90)
50 mg (3333% DV)
41.7× RDA — above typical dose 76 studies (A:0, B:33)
25 mg (1471% DV)
19.2× RDA — above typical dose 13 studies (A:0, B:1)
120 mg (600% DV)
Exceeds UL by 3.4× (UL: 35 mg) 196 studies (A:5, B:63)
Vitamin B-6 Complex
25 mg (1250% DV)
800 mcg (200% DV)
2.0× RDA — within safe limits 226 studies (A:10, B:105)
100 mcg (1667% DV)
41.7× 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)
150 mg (1500% DV)
30.0× RDA — above typical dose 2 studies — no high-quality reviews
Calcium
300 mg (30% DV)
300 mg (75% DV)
Within RDA (0.7× RDA) 316 studies (A:8, B:159)
20 mg (133% DV)
1.8× RDA — within safe limits 263 studies (A:6, B:134)
200 None (286% DV)
Exceeds UL by 500.0× (UL: 0.4 mg) 173 studies (A:0, B:67)
2 mg (100% DV)
2.2× RDA — within safe limits 37 studies (A:0, B:11)
15 mg (750% DV)
Exceeds UL by 1.4× (UL: 11 mg) 9 studies — no high-quality reviews
200 mcg (167% DV)
5.7× RDA — above typical dose 199 studies (A:1, B:55)
50 mcg (67% DV)
1.1× RDA — within safe limits 3 studies — no high-quality reviews
Potassium
75 mg (2% DV)
20 mg
Market median: 125.0mg (294 products) 38 studies (A:1, B:7)
25 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)
50 mg
Market median: 500.0mg (9 products) 7 studies — no high-quality reviews
25 mcg
Market median: 0.5mg (6 products) 1 studies (A:0, B:1)
1 mg
Market median: 3.0mg (58 products) 3 studies — no high-quality reviews
Trace Elements
100 mcg
Resistance Support Proprietary Blend
500 mg

Other Ingredients

Cellulose Vegetable Stearate Silica
Claims

Label Claims — Verification

Unverified All Other
Info

Product Information

Directions for Use

Suggested Usage: As a dietary supplement, adults take 4 tablets daily or as directed by your healthcare professional. This product is best taken with meals.

Warnings & Precautions

Tamper resistant package, do not use if outer seal is missing.

KEEP OUT OF REACH OF CHILDREN.

Formulation Notes

This product contains NO yeast, wheat, gluten, soy protein, milk/dairy, corn, sodium, sugar, starch, artificial coloring, preservatives or flavoring.

Additional Information

Formula #81100

For optimal storage conditions, store in a cool, dry place. (59(0)-77(0)F/ 15(0)-25(0)C) (35-65% relative humidity)

Metadata

Product Details

UPC / SKU3 10539 81100 9
DSLD Entry Date2014-03-25
Product TypeOther Combinations
FormTablet or Pill
BrandDouglas Laboratories
DSLD ID31326
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.