🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 50% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

2 Capsule(s) Serving Size
125 Servings
Non-Nutrient/Non-Botanical Product Type
50% Evidence Coverage

Supplement Facts — Evidence Check

500 mg
📊 Market median: 500.0mg (283 products) 📚 173 studies (Tier A: 0, B: 62)
This product: 500mg
156 mg
📊 Market median: 200.0mg (136 products) 📚 3 studies — no high-quality reviews
This product: 156mg

Other Ingredients

Rice Flour Gelatin Maltodextrin Magnesium Stearate

Label Claims — Verification

All Other
Structure/Function
All Other (99% of products) Structure/Function (84% of products) Nutrient (23% of products) Qualified Health (1% of products)

Target Groups

Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Suggested use: As a dietary supplement, take two capsules two to three times per day with water on an empty stomach or as recommended by your healthcare provider.

⚠️ Warnings & Precautions

Warning: For adults only.

Consult your physician before using this or any product if you are pregnant or nursing, taking medication, or if you have a medical condition.

Keep out of reach of children.

Do not use if seal is broken.

Additional Information

Enzyme and antioxidant flavonoid to support healthy respiratory function Supports healthy seasonal immune system function Provides protection against free radical damage Science-Backed Quality Since 1969

Store in a cool, dry place.

Respiratory Health Advanced formula

SW733 Rev 0 03 05 18

Product Details

UPC / SKU 0 87614 01733 4
DSLD Entry Date 2019-02-25
Product Type Non-Nutrient/Non-Botanical
Form Capsule
Brand Swanson
DSLD ID 187496
Data Updated 2026-04-11

Research Evidence

184 Research Sources
55 Avg Quality Score
91 Systematic Review
75 Meta Analysis
7 Rct
7 Clinical Trial
2 Cochrane Review
1 Openfda Safety
B Treatment of gouty arthritis with traditional Chinese medicine decoction: Meta-analysis, network pharmacology analysis, and molecular docking
Meta Analysis Medicine 2024
B Effects of quercetin supplementation on lipid profile: A systematic review and meta-analysis of randomized controlled trials
Meta Analysis Critical reviews in food science and nutrition 2017
B Dietary polyphenols and the risk of metabolic syndrome: a systematic review and meta-analysis
Meta Analysis BMC endocrine disorders 2024
B Quercetin and endurance exercise capacity: a systematic review and meta-analysis
Meta Analysis Medicine and science in sports and exercise 2011
B Dietary flavonoid intake and smoking-related cancer risk: a meta-analysis
Meta Analysis PloS one 2013
B Clinical efficacy evaluation and potential mechanism prediction on Guizhi-Shaoyao-Zhimu decoction in the treatment of gouty arthritis based on meta-analysis, network pharmacology analysis, and molecular docking
Meta Analysis Medicine 2023
B A Systematic Review: Quercetin-Secondary Metabolite of the Flavonol Class, with Multiple Health Benefits and Low Bioavailability
Systematic Review International journal of molecular sciences 2024
B Dietary flavonoid for preventing colorectal neoplasms.
Cochrane Review The Cochrane database of systematic reviews
B Flavonoids for treating venous leg ulcers.
Cochrane Review The Cochrane database of systematic reviews
B The effects of quercetin supplementation on lipid profiles and inflammatory markers among patients with metabolic syndrome and related disorders: A systematic review and meta-analysis of randomized controlled trials
Meta Analysis Critical reviews in food science and nutrition 2020
View all evidence for Quercetin →

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