Immune Support

Supports immune defenses — e.g. vitamin C, zinc, elderberry, echinacea.

7,563 on-market products · include off-market

Immune support supplements are formulated to help maintain the body's natural defenses, especially during seasonal changes or periods of physical stress. This section of the database collects dietary supplement labels whose primary marketed use relates to immune health. Common active ingredients include Vitamin C, Zinc, Vitamin D, Elderberry, and Echinacea, often combined in single products or as part of broader wellness blends. Many labels also list supporting nutrients such as Selenium, Quercetin, and probiotics. Browsing here lets you compare ingredient amounts, percentage Daily Value (%DV), and serving sizes across thousands of products as recorded in the NIH Dietary Supplement Label Database (DSLD). This information is provided for reference and education only and is not medical advice; always read the full product label and consult a qualified healthcare provider before starting any supplement.

Quercetin label

Quercetin

Longevity Medical Clinic

Non-Nutrient / Non-BotanicalCapsuleOn Market
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Quercetin label

Quercetin

NutraMedix

Non-Nutrient / Non-BotanicalCapsuleOn Market
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Quercetin label

Quercetin

Pure Encapsulations

Non-Nutrient / Non-BotanicalCapsuleOn Market
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Quercetin label

Quercetin

Natural Factors

Other CombinationsCapsuleOn Market
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Quercetin label

Quercetin

Natural Factors

Other CombinationsCapsuleOn Market
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Quercetin label

Quercetin

Doctor Recommended Supplements

Non-Nutrient / Non-BotanicalCapsuleOn Market
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Quercetin + label

Quercetin +

Quantum Health

Other CombinationsCapsuleOn Market
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Quercetin 1000 mg label

Quercetin 1000 mg

GNC Preventive Nutrition

Non-Nutrient / Non-BotanicalOther (e.g. tea bag)On Market
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Quercetin 1000 mg label

Quercetin 1000 mg

Best Naturals

Non-Nutrient / Non-BotanicalTablet or PillOn Market
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Quercetin 1000 mg label

Quercetin 1000 mg

KAL

Non-Nutrient / Non-BotanicalTablet or PillOn Market
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Quercetin 1000 mg label

Quercetin 1000 mg

O Orgeuos

Other CombinationsCapsuleOn Market
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Quercetin 1000 mg label

Quercetin 1000 mg

Nutricost

Non-Nutrient / Non-BotanicalCapsuleOn Market
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Quercetin 1000 mg label

Quercetin 1000 mg

Best Naturals

Non-Nutrient / Non-BotanicalCapsuleOn Market
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Quercetin 1000 mg label

Quercetin 1000 mg

NusaPure

Botanicals & HerbsCapsuleOn Market
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Quercetin 1000 mg label

Quercetin 1000 mg

Smart Nutra Labs

Non-Nutrient / Non-BotanicalCapsuleOn Market
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Quercetin 1000 mg label

Quercetin 1000 mg

Healthy Directions

Non-Nutrient / Non-BotanicalCapsuleOn Market
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Quercetin 1200 mg label

Quercetin 1200 mg

NutriFlair

Other CombinationsCapsuleOn Market
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Quercetin 1500 mg label

Quercetin 1500 mg

AN Amazing Nutrition Amazing Formulas

Non-Nutrient / Non-BotanicalCapsuleOn Market
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Quercetin 20x Plus label

Quercetin 20x Plus

XYMOGEN

Other CombinationsCapsuleOn Market
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Quercetin 20x Plus label

Quercetin 20x Plus

XYMOGEN

Other CombinationsCapsuleOn Market
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Quercetin 250 mg label

Quercetin 250 mg

BIOVEA

Other CombinationsCapsuleOn Market
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Quercetin 250 mg label

Quercetin 250 mg

Vital Nutrients

Non-Nutrient / Non-BotanicalCapsuleOn Market
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Quercetin 250 mg label

Quercetin 250 mg

VQ Verified Quality

Non-Nutrient / Non-BotanicalCapsuleOn Market
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Quercetin 300 label

Quercetin 300

NutriCology

Other CombinationsCapsuleOn Market
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