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LDA Formula

product on market Capsule Douglas Laboratories Safety: 96/100
96/100

This product looks safe

  • Niacin: 200mg is 5.7× the Tolerable Upper Intake Level (35mg)
  • Magnesium: 500mg is 1.4× the Tolerable Upper Intake Level (350mg)
  • Manganese: 20mg is 1.8× the Tolerable Upper Intake Level (11mg)
  • 71% of ingredients have research evidence
F Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

This formula contains essential vitamins A, C, D3, K1, and thiamine, which are supported by strong evidence for maintaining immune function and metabolic health. These nutrients play critical roles in cellular protection and energy production. The overall safety profile is high, though evidence coverage for the specific blend is limited.

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

Alerts

Safety Alerts

Niacin: 200mg is 5.7× the Tolerable Upper Intake Level (35mg)

Magnesium: 500mg is 1.4× the Tolerable Upper Intake Level (350mg)

Manganese: 20mg is 1.8× the Tolerable Upper Intake Level (11mg)

Label

Product Label

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

Label Data

9 Vegetarian Capsule(s)
Serving Size
30
Servings
Other Combinations
Product Type
71%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin A
25000 IU (500% DV)
Vitamin C
300 mg (500% DV)
100 IU (25% DV)
Within RDA (0.2× RDA) 608 studies (A:16, B:251)
60 mcg (75% DV)
Within RDA (0.5× RDA) 275 studies (A:9, B:175)
100 mg (6667% DV)
83.3× RDA — above typical dose 76 studies (A:0, B:33)
50 mg (2941% DV)
38.5× RDA — above typical dose 13 studies (A:0, B:1)
200 mg (1000% DV)
Exceeds UL by 5.7× (UL: 35 mg) 196 studies (A:5, B:63)
50 mg (2500% DV)
38.5× RDA — above typical dose (UL: 100 mg) 114 studies (A:3, B:35)
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)
400 mg (4000% DV)
80.0× RDA — above typical dose 2 studies — no high-quality reviews
Calcium
500 mg (50% DV)
150 mcg (100% DV)
Within RDA (1.0× RDA) 245 studies (A:4, B:133)
500 mg (125% DV)
Exceeds UL by 1.4× (UL: 350 mg) 316 studies (A:8, B:159)
20 mg (133% DV)
1.8× RDA — within safe limits 263 studies (A:6, B:134)
200 mcg (286% DV)
3.6× RDA — above typical dose (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)
20 mg (1000% DV)
Exceeds UL by 1.8× (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)
150 mcg (200% DV)
3.3× RDA — above typical dose (UL: 2 mg) 3 studies — no high-quality reviews
99 mg (3% DV)
Market median: 4002.0mg (1 products) 21 studies (A:0, B:2)
150 mg
Within RDA (0.3× RDA) 38 studies (A:1, B:7)
50 mg
Market median: 550.0mg (217 products) 29 studies (A:0, B:5)
39 mcg
Market median: 0.5mg (6 products) 1 studies (A:0, B:1)
2 mg
Market median: 3.0mg (58 products) 3 studies — no high-quality reviews
Market median: 500.0mg (9 products) 7 studies — no high-quality reviews
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)

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 9 capsules daily with food or as directed by your healthcare professional.

Warnings & Precautions

WARNING: This product contains Vitamin K, which interferes with the prescription drugs COumadin and Warfarin. Do not take this if taking either of these drugs.

KEEP OUT OF REACH OF CHILDREN.

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

Additional Information

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

Formula #99733

Metadata

Product Details

UPC / SKU3 10539 02775 2
DSLD Entry Date2012-07-25
Product TypeOther Combinations
FormCapsule
BrandDouglas Laboratories
DSLD ID10489
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.