Daily Immune Defense

product on market Capsule Doctor's Best 🟢 Safety: 100/100
Brand: Doctor's Best
🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 50% of ingredients have research evidence
A Label Compliance Grade

Product Label

Label for Daily Immune Defense
📄 Open Full PDF View on NIH DSLD →
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Label Data

2 Capsule(s) Serving Size
60 Servings
Other Combinations Product Type
50% Evidence Coverage

Supplement Facts — Evidence Check

1000 IU (250% DV)
✅ 1.7× RDA — within safe limits 📚 604 studies (Tier A: 16, B: 251)
RDA 0.015mg This product: 0.025mg UL 0.1mg
15 mg (100% DV)
✅ 1.4× RDA — within safe limits 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 15mg UL 40mg
1 mg (50% DV)
✅ 1.1× RDA — within safe limits 📚 36 studies (Tier A: 0, B: 11)
RDA 0.9mg This product: 1mg UL 10mg
Immunolin(R)
500 mg
EpiCor dried Yeast Fermentate
250 mg
250 mg
📊 Market median: 500.0mg (115 products)
Median 500.0mg This product: 250mg

Other Ingredients

Gelatin Cellulose Magnesium Stearate Silicon Dioxide

Label Claims — Verification

❓ Nutrient
❓ All Other
❓ Structure/Function
All Other (99% of products) Structure/Function (85% of products) Nutrient (70% of products) Approved Health (4% of products)

Target Groups

Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Suggested Adult Use: Take two capsules twice daily, with or without food.

🧪 Formulation Notes

Featuring EPICOR(R)

Not Suitable for Vegetarians

Daily Immune Defense featuring EpiCor(R) also contains 2000 IU of vitamin D3 and 30 mg of zinc per dose.

Additional Information

Vitamin D3 is known to powerfully modulate immune function and the activity of immune cells, and promote innate immunity.* Zinc promotes immune wellness by supporting the body’s T-cell response and enhancing the body’s immune resistance.* Copper is included to maintain a healthy zinc-copper ratio, as each mineral competes with the other for absorption. A proper balance of the two is important for health.* Modulates Immune System Function* Promotes Optimal Immune Health and Wellness*

POWERFUL IMMUNE SUPPORT*

CONTAINS NOTHING OTHER THAN LISTED INGREDIENTS

R 01/12

Product Details

UPC / SKU 7 53950 00179 4
DSLD Entry Date 2013-11-25
Product Type Other Combinations
Form Capsule
Brand Doctor's Best
DSLD ID 25491
Data Updated 2026-04-11

Research Evidence

872 Research Sources
53 Avg Quality Score
309 Meta Analysis
309 Clinical Trial
111 Rct
71 Systematic Review
55 Guideline
4 Cochrane Review
4 Regulatory Source
2 Other
2 Narrative Review
2 Observational
1 Openfda Safety
A Vitamin D and vitamin D analogues for preventing fractures associated with involutional and post-menopausal osteoporosis
Meta Analysis The Cochrane database of systematic reviews 2009
PubMed DOI Cochrane
A Vitamin D supplementation for prevention of mortality in adults
Meta Analysis The Cochrane database of systematic reviews 2014
PubMed DOI Cochrane
A Vitamin D and vitamin D analogues for preventing fractures in post-menopausal women and older men
Meta Analysis The Cochrane database of systematic reviews 2014
PubMed DOI Cochrane
A Vitamin D supplementation for prevention of cancer in adults
Meta Analysis The Cochrane database of systematic reviews 2014
PubMed DOI Cochrane
A Interventions for preventing falls in older people in care facilities and hospitals
Meta Analysis The Cochrane database of systematic reviews 2018
PubMed DOI
A Drugs for preventing lung cancer in healthy people
Meta Analysis The Cochrane database of systematic reviews 2020
PubMed DOI
A Vitamin D supplementation for prevention of mortality in adults
Meta Analysis The Cochrane database of systematic reviews 2011
PubMed DOI Cochrane
A High prevalence of vitamin D deficiency in Asia: A systematic review and meta-analysis
Meta Analysis Critical reviews in food science and nutrition 2023
PubMed DOI
A The effect of vitamin D supplementation on depressive symptoms in adults: A systematic review and meta-analysis of randomized controlled trials
Meta Analysis Critical reviews in food science and nutrition 2023
PubMed DOI
A Interventions for preventing falls in older people living in the community
Meta Analysis The Cochrane database of systematic reviews 2009
PubMed DOI
View all evidence for Vitamin D →

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