🟢 90/100

This product looks safe

  • Contains proprietary blend — exact ingredient amounts not disclosed
  • 64% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Safety Alerts

ℹ️ Contains proprietary blend — exact ingredient amounts not disclosed

Label Data

2 Capsule(s) Serving Size
180 Servings
Other Combinations Product Type
64% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C
300 mg (333% DV)
10 mcg (50% DV)
✅ Within RDA (0.7× RDA of 0.015 mg) 📚 604 studies (Tier A: 16, B: 251)
RDA 0.015mg This product: 0.01mg UL 0.1mg
5 mg (417% DV)
📊 4.2× RDA — above typical dose 📚 76 studies (Tier A: 0, B: 33)
RDA 1.2mg This product: 5mg
5 mg (385% DV)
📊 3.8× RDA — above typical dose 📚 12 studies (Tier A: 0, B: 1)
RDA 1.3mg This product: 5mg
5 mg (31% DV)
✅ Within RDA (0.4× RDA of 14 mg) 📚 193 studies (Tier A: 5, B: 63)
RDA 14mg This product: 5mg UL 35mg
5 mg (100% DV)
✅ Within RDA (1.0× RDA of 5 mg) 📚 1 studies — no high-quality reviews
RDA 5mg This product: 5mg
5 mg (294% DV)
📊 3.8× RDA — above typical dose (UL: 100 mg) 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 5mg UL 100mg
25 mcg (1041% DV)
📊 10.4× RDA — above typical dose 📚 138 studies (Tier A: 1, B: 44)
RDA 0.0024mg This product: 0.025mg
📊 Market median: 400.0mg (380 products) 📚 34 studies (Tier A: 1, B: 10)
This product: 400mg
Proprietary Organic Mushroom Blend
100 mg
📊 Market median: 470.0mg (230 products) 📚 9 studies (Tier A: 3, B: 3)
This product: 60mg
📊 Market median: 500.0mg (234 products) 📚 95 studies (Tier A: 0, B: 35)
This product: 60mg
Black Currant Fruit Extract
50 mg
Goldenseal root extract
20 mg

Other Ingredients

Plant Cellulose Proprietary Protective Methyl B12 Matrix

Label Claims — Verification

Nutrient
All Other
Structure/Function
All Other (99% of products) Structure/Function (83% of products) Nutrient (54% of products)

Target Groups

Adult (18 - 50 Years) No Allergies Gluten Free Dairy Free Sugar Free

Product Information

📋 Directions for Use

Suggested Use Consume two capsules daily - preferably with food. You can increase or decrease your intake as required or as guided by your physician.

⚠️ Warnings & Precautions

Caution Pregnant or nursing mothers should consult a health care professional before taking any supplement or medication.

🧪 Formulation Notes

Since 1979, unsurpassed purity, quality and efficacy. 100% Solar production Zero-carbon footprint

100% Solar

Echinacea Goldenseal Berberine Vitamin C B-Complex Astragalus Mushroom Complex Black currant

Immune Factors is an extremely comprehensive blend of nutrients, botanicals and mushrooms to support a healthy immune system. Immune Factors begins with our high potency B-complex, along with our non-acidic vitamin C - all of which are essential for a healthy immune system. They are also not readily available from the diet and easily depleted by stress and life. We add two standardized extracts of echinacea, along with extracts of goldenseal, berberine, astragalus and black currant. All of these plant-based extracts have been used for centuries to optimize immune system function and modern research has validated their benefits. We also add our unique, proprietary blend of organic immune supportive mushrooms, including turkey tail, reishi, chaga, maitake, shiitake, cordyceps, and agaricus. The combined benefits of all these remarkable ingredients make Immune factors a uniquely powerful opportunity to naturally support immune system function.

Contains no additives or common allergens Contains no milk, soy, yeast, wheat, gluten, sodium, salt, sugar, fat, cholesterol, color, preservative, common allergens, genetically modified (GMO) ingredients or manufacturing additives.

Additional Information

For questions about the use of this product call 800.800.1200.

Questions? Reorders? 800.800.1200 procaps.com Andrew Lessman

Product Details

UPC / SKU 792321
DSLD Entry Date 2025-07-24
Product Type Other Combinations
Form Capsule
Brand ProCaps
DSLD ID 331566
Data Updated 2026-04-11

Research Evidence

371 Research Sources
54 Avg Quality Score
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
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013
A Vitamin E supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015
A Vitamin C supplementation for prevention and treatment of pneumonia
Meta Analysis The Cochrane database of systematic reviews 2020
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021
A Nutritional interventions for preventing and treating pressure ulcers
Meta Analysis The Cochrane database of systematic reviews 2024
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
A Circulating vitamin C concentration and risk of cancers: a Mendelian randomization study
Meta Analysis BMC medicine 2021
View all evidence for Vitamin C →

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