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Ultimate Immune Defense

product on market Capsule Swanson Safety: 90/100
90/100

This product looks safe

  • Vitamin D3: 0.125mg is 1.2× the Tolerable Upper Intake Level (0.1mg)
  • 75% of ingredients have research evidence
C Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · methodology

Vitamin C, D3, and zinc have strong evidence for supporting immune function and reducing cold duration. Elderberry fruit extract shows moderate evidence for alleviating upper respiratory symptoms. Together, these ingredients target different pathways of the immune response.

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

Alerts

Safety Alerts

Vitamin D3: 0.125mg is 1.2× the Tolerable Upper Intake Level (0.1mg)

Label

Product Label

Label for Ultimate Immune Defense
Open Full PDF View on NIH DSLD →
Details

Label Data

2 Capsule(s)
Serving Size
30
Servings
Botanical with Nutrients
Product Type
75%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin C
1000 mg (1111% DV)
125 mcg (625% DV)
Exceeds UL by 1.2× (UL: 0.1 mg) 608 studies (A:16, B:251)
15 mg (136% DV)
1.4× RDA — within safe limits 263 studies (A:6, B:134)
Market median: 175.0mg (497 products) 11 studies (A:0, B:1)

Other Ingredients

Microcrystalline Cellulose Gelatin Maltodextrin Silica
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested use: As a dietary supplement, take two capsules per day with food and water.

Warnings & Precautions

Warning: For adults only. Not intended for use by children. Keep out of reach of children.

Do not take this product if you are pregnant or nursing. Consult your healthcare provider before use if you are taking any prescription medications or if you have a medical condition, especially hypercalcemia or kidney disorders.

This product should be used under the supervision of a healthcare professional to monitor Vitamin D blood levels. Do not exceed recommended dose. Do not use if seal is broken.

Formulation Notes

An expert-formulated combination of immune-supporting ingredients Provides comprehensive immune system defense

Contains 1,000mg Vitamin C and 5,000 IU (125mcg) of Vitamin D3

High potency Immune health Comprehensive formula

Ultimate Immune Defense with Vitamin C, D, Zinc & Elderberry

Additional Information

Store in a cool, dry place.

Metadata

Product Details

UPC / SKU0 87614 11812 3
DSLD Entry Date2024-06-20
Product TypeBotanical with Nutrients
FormCapsule
BrandSwanson
DSLD ID308798
Data Updated2026-04-11
Research

Research Evidence

371
Research Sources
54
Avg Quality
148
Meta Analysis
82
Systematic Review
71
Rct
62
Clinical Trial
2
Regulatory Source
1
Cochrane Review
1
Narrative Review
1
Other
1
Openfda Safety
A Vitamin C supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017 PubMed DOI
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013 PubMed DOI
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013 PubMed DOI
A Vitamin E supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Vitamin C supplementation for prevention and treatment of pneumonia
Meta Analysis The Cochrane database of systematic reviews 2020 PubMed DOI
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021 PubMed DOI
A Nutritional interventions for preventing and treating pressure ulcers
Meta Analysis The Cochrane database of systematic reviews 2024 PubMed DOI
A Does Vitamin C Supplementation Provide a Protective Effect in Periodontal Health? A Systematic Review and Meta-Analysis
Meta Analysis International journal of molecular sciences 2024 PubMed DOI
A Circulating vitamin C concentration and risk of cancers: a Mendelian randomization study
Meta Analysis BMC medicine 2021 PubMed DOI
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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.