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Respond Immune Complex

product on market Tablet or Pill Sundown Organics Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 43% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · methodology

Vitamin C, D, and zinc have strong evidence for supporting immune function and respiratory health. Selenium and Reishi mushroom provide additional antioxidant support, though research on the latter is more limited. Together, these ingredients target various pathways of the immune response.

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

Label

Product Label

Label for Respond Immune Complex
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Tablet(s)
Serving Size
Other Combinations
Product Type
43%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin C
20 mg (22% DV)
10 mcg (50% DV)
Within RDA (0.7× RDA) 608 studies (A:16, B:251)
5.5 mg (50% DV)
Within RDA (0.5× RDA) 263 studies (A:6, B:134)
27.5 mcg (50% DV)
Within RDA (0.5× RDA) 173 studies (A:0, B:67)
Market median: 340.0mg (243 products) 3 studies — no high-quality reviews
organic Shiitake Mushroom
35 mg
organic Maitake Mushroom
30 mg

Other Ingredients

Tapioca Dextrose Fermentation Blend organic Bamboo extract organic Rice extract Blend organic Safflower Oil organic Oats Maltodextrin organic Sunflower Lecithin organic Palm Oil organic Guar Gum
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions: For adults, take one (1) tablet daily, preferably with a meal.

Once daily

Warnings & Precautions

As a reminder, discuss the supplements and medications you take with your health care providers.

Contains soy ingredients.

Warning: If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use.

Discontinue use and consult your doctor if any adverse reactions occur.

Keep out of reach of children.

Tamper resistant: Do not use if seal under cap is broken or missing.

Formulation Notes

Nutrients incorporated into a Fermented Blend

Non-GMO No gluten No wheat No milk No lactose No artificial color No artificial flavor No artificial sweetener No preservatives No peanuts No tree nuts No fish Sodium free

Certified Organic by Quality Assurance International

Gluten free Dairy free Non-GMO

Stay strong with Vitamin C, D3 and Zinc plus Organic Mushrooms

Sundown believes in living clean...and being transparent. That's why you won't find genetically modified ingredients, gluten, wheat, dairy, lactose or artificial flavors in any of our products. Now, we're going one step further with our USDA Certified organic Supplements that are 100% free of synthetic dyes. Now there's a clean, organic choice you can feel good about.

Stay strong with our Respond Immune Complex containing key immune supporting Vitamins C and D3 along with Selenium and Zinc. Organic mushrooms Reishi, Shiitake and Maitake have been used fr their traditional health properties in Chinese and Japanese cultures for thousands of years.

USDA Organic

Additional Information

Store at room temperature and avoid excessive heat.

Tree-free carton Made from 100% sugar cane fiber Eliminates Wood-based processes Renewable resource Removes carbon dioxide from the atmosphere

Quality Assurance International Certified Organic

Made in the USA with select ingredients from around the world

Coated paper box US only how2recycle.info

USDA Organic

Organic, Clean Nutrition In a world of choice, living your best becomes a collaboration between you...and you. When your well-being is important, living clean is a conscious choice you make.

Metadata

Product Details

DSLD Entry Date2019-12-22
Product TypeOther Combinations
FormTablet or Pill
DSLD ID212235
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.