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Seasonal Shield

product on market Capsule NuMedica Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 64% of ingredients have research evidence
A 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. Quercetin and Boswellia serrata are included for their potential antioxidant and anti-inflammatory properties, though evidence for these specific effects is more limited. The formulation maintains a high safety profile.

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

Label

Product Label

Label for Seasonal Shield
Open Full PDF View on NIH DSLD →
Details

Label Data

4 Capsule(s)
Serving Size
30
Servings
Other Combinations
Product Type
64%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin C
200 mg (222% DV)
25 mcg (125% DV)
1.7× RDA — within safe limits 608 studies (A:16, B:251)
25 mg (227% DV)
2.3× RDA — within safe limits 263 studies (A:6, B:134)
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)
Market median: 375.0mg (171 products) 31 studies (A:1, B:14)
Nettle Root Extract
300 mg
Market median: 600.0mg (7 products) 39 studies (A:2, B:13)
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)
200 mg
Market median: 200.0mg (136 products) 3 studies — no high-quality reviews
Market median: 100.0mg (284 products) 10 studies (A:0, B:4)
15 mg
Market median: 496.0mg (192 products) 20 studies — no high-quality reviews

Other Ingredients

Hydroxypropyl Methylcellulose Magnesium Stearate Silicon Dioxide
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions: Take four capsules once per day or as directed by your healthcare practitioner.

Warnings & Precautions

Caution: Keep out of reach of children.

Formulation Notes

Seasonal Shield is an advanced, broad-spectrum nutritional formula providing comprehensive support for seasonal environmental challenges.

The select nutrients in this formula - vitamin C, vitamin D3, and zinc - have been chosen for their synergistic ability to support the body's immune response. Key ingredients in Season Shield include quercetin, bromelain and nettle extract, which have been found to help promote healthy mucus viscosity and provide histamine support. Additionally, NAC is a unique form of the amino acid L-cysteine which has been found to support healthy tissue levels of glutathione (GSH).

Does not contain: milk, eggs, fish, shellfish, tree nuts, peanuts, wheat, soy. Sourced from non-GMO ingredients. Gluten-free

Vegetarian

Professional quality formulas Support for seasonal challenges Advanced histamine support

Additional Information

Storage: Keep tightly closed in a cool, dry place.

cGMP Third-Party Certified Facility

Metadata

Product Details

UPC / SKU8 12527 01677 4
DSLD Entry Date2024-12-21
Product TypeOther Combinations
FormCapsule
DSLD ID323684
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.