---
product_id: 17999406
title: "Vital Nutrients Quercetin - Vegan Quercetin Supplement with Bioflavonoids for Sinus, Respiratory, Heart, & Immune Function Support - Gluten, Dairy, Soy Free - 500mg - 100 Capsules"
brand: "vital nutrients"
price: "฿3740"
currency: THB
in_stock: true
reviews_count: 8
category: "Vital Nutrients"
url: https://www.desertcart.co.th/products/17999406-vital-nutrients-quercetin-vegan-quercetin-supplement-with-bioflavonoids-for-sinus
store_origin: TH
region: Thailand
---

# 100% vegan & allergen-free 500mg potent dose Third-party purity tested Vital Nutrients Quercetin - Vegan Quercetin Supplement with Bioflavonoids for Sinus, Respiratory, Heart, & Immune Function Support - Gluten, Dairy, Soy Free - 500mg - 100 Capsules

**Brand:** vital nutrients
**Price:** ฿3740
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate your immunity and breathe easy with every capsule!

## Quick Answers

- **What is this?** Vital Nutrients Quercetin - Vegan Quercetin Supplement with Bioflavonoids for Sinus, Respiratory, Heart, & Immune Function Support - Gluten, Dairy, Soy Free - 500mg - 100 Capsules by vital nutrients
- **How much does it cost?** ฿3740 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/17999406-vital-nutrients-quercetin-vegan-quercetin-supplement-with-bioflavonoids-for-sinus)

## Best For

- vital nutrients enthusiasts

## Why This Product

- Trusted vital nutrients brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Clean & Vegan Formula:** Free from gluten, dairy, soy, and common allergens—pure wellness without compromise.
- • **Power-Packed 500mg Dose:** Clinically effective quercetin strength for robust sinus, respiratory, and immune support.
- • **Antioxidant Defense Boost:** Supports oxidative stress reduction to protect heart, cellular, and respiratory health.
- • **Trusted Practitioner Quality:** Manufactured in NSF-certified, allergen-free facility with rigorous third-party testing.
- • **Seasonal Wellness Game-Changer:** Join thousands who’ve upgraded their allergy and respiratory routine with proven results.

## Overview

Vital Nutrients Quercetin delivers a potent 500mg vegan bioflavonoid formula designed to support sinus, respiratory, heart, and immune health. Free from major allergens and artificial additives, it’s crafted in an NSF-certified facility with third-party testing to ensure purity and potency. Trusted by healthcare practitioners and health-conscious professionals alike, this supplement offers a clean, effective solution to seasonal and oxidative stress challenges.

## Description

Buy Vital Nutrients Quercetin | Vegan Quercetin Supplement with Bioflavonoids for Sinus, Respiratory, Heart, & Immune Function Support | Gluten, Dairy, Soy Free | 500mg | 100 Capsules on desertcart.com ✓ FREE SHIPPING on qualified orders

Review: Outstanding Natural Support - Highly Recommended! - Effectiveness: This Vital Nutrients Quercetin supplement has been a game-changer for my seasonal wellness routine. I've noticed significant improvement in my sinus comfort and respiratory function since starting this supplement about two months ago. The bioflavonoid blend seems to work synergistically with the quercetin, providing comprehensive support that I can genuinely feel. My usual seasonal struggles have been much more manageable, and I feel like my body's natural defenses are stronger. Quality: Vital Nutrients consistently delivers pharmaceutical-grade supplements, and this quercetin formula is no exception. The capsules are easy to swallow, with no unpleasant aftertaste or digestive upset. I appreciate that it's vegan-friendly and free from unnecessary fillers. The packaging is professional and includes clear dosing instructions. As someone who researches supplement quality extensively, I trust this brand's commitment to purity and potency testing. Value for Money: While not the cheapest quercetin supplement on the market, the quality and effectiveness make it worth every penny. The therapeutic dosing means I actually need fewer capsules compared to some bargain brands I've tried in the past. When I calculate the cost per effective dose and factor in the noticeable results, this represents excellent value. I'd rather invest in a supplement that actually works than waste money on cheaper alternatives that don't deliver. This supplement has become a staple in my daily routine, and I'll definitely be reordering. Highly recommended for anyone seeking natural respiratory and sinus support!
Review: Perfect antihistamine - Excellent product I take every day to keep my allergies in check. Highly recommend!!

## Features

- Potent Support for Healthy Sinus and Respiratory Function: Vital Nutrients Quercetin is an effective bioflavonoid that supports seasonal allergy and respiratory challenges and immune health
- Powerful Antioxidant Protects Against Oxidative Stress: Our Quercetin supplement can help to maintain or support the proper levels of enzymes and other factors necessary for normal respiratory, cardiometabolic, cellular, and sinus health as well as oxidative stress
- Clean Vegan Formula: Free from gluten, dairy, peanut, tree nut, fish, shellfish, soy, sesame, and egg. Non-GMO. Made without artificial fillers, coatings, binders, or colors
- Quality You Can Rely on: Vital Nutrients supplements are manufactured in our allergen-free NSF-certified Middletown, CT facility. Our rigorous quality assurance program includes third-party independent laboratory testing of raw ingredients and finished products for purity and potency to ensure what’s on the label matches what’s in the bottle
- Trusted by Healthcare Practitioners Worldwide: Vital Nutrients was founded 30 years ago by practitioners who set out to make a positive and lasting impact on the health of people and planet. Today, our premium line of clinically relevant, pure, clean-label formulas is trusted by healthcare practitioners and health-conscious consumers worldwide

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B000LNQ2RG |
| Best Sellers Rank | #46,286 in Health & Household ( See Top 100 in Health & Household ) #2,146 in Blended Vitamin & Mineral Supplements #4,271 in Diet & Sports Nutrition |
| Customer Reviews | 4.6 4.6 out of 5 stars (707) |
| Date First Available  | December 6, 2006 |
| Is Discontinued By Manufacturer  | No |
| Item model number  | 1 |
| Manufacturer  | Vital Nutrients |
| Product Dimensions  | 3.7 x 2 x 1.8 inches; 2.88 ounces |

## Product Details

- **Brand:** Vital Nutrients
- **Diet Type:** Vegetarian
- **Flavor:** Unflavored
- **Item Form:** Capsule
- **Primary Supplement Type:** Quercetin

## Images

![Vital Nutrients Quercetin - Vegan Quercetin Supplement with Bioflavonoids for Sinus, Respiratory, Heart, & Immune Function Support - Gluten, Dairy, Soy Free - 500mg - 100 Capsules - Image 1](https://m.media-amazon.com/images/I/61DUDwSXMvL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Outstanding Natural Support - Highly Recommended!
*by A***S on November 27, 2025*

Effectiveness: This Vital Nutrients Quercetin supplement has been a game-changer for my seasonal wellness routine. I've noticed significant improvement in my sinus comfort and respiratory function since starting this supplement about two months ago. The bioflavonoid blend seems to work synergistically with the quercetin, providing comprehensive support that I can genuinely feel. My usual seasonal struggles have been much more manageable, and I feel like my body's natural defenses are stronger. Quality: Vital Nutrients consistently delivers pharmaceutical-grade supplements, and this quercetin formula is no exception. The capsules are easy to swallow, with no unpleasant aftertaste or digestive upset. I appreciate that it's vegan-friendly and free from unnecessary fillers. The packaging is professional and includes clear dosing instructions. As someone who researches supplement quality extensively, I trust this brand's commitment to purity and potency testing. Value for Money: While not the cheapest quercetin supplement on the market, the quality and effectiveness make it worth every penny. The therapeutic dosing means I actually need fewer capsules compared to some bargain brands I've tried in the past. When I calculate the cost per effective dose and factor in the noticeable results, this represents excellent value. I'd rather invest in a supplement that actually works than waste money on cheaper alternatives that don't deliver. This supplement has become a staple in my daily routine, and I'll definitely be reordering. Highly recommended for anyone seeking natural respiratory and sinus support!

### ⭐⭐⭐⭐⭐ Perfect antihistamine
*by J***H on October 13, 2025*

Excellent product I take every day to keep my allergies in check. Highly recommend!!

### ⭐⭐⭐⭐⭐ Immune support
*by M***M on October 26, 2025*

I love these to support immune system during flu season

## Frequently Bought Together

- Vital Nutrients Quercetin | Vegan Quercetin Supplement with Bioflavonoids for Sinus, Respiratory, Heart, & Immune Function Support | Gluten, Dairy, Soy Free | 500mg | 100 Capsules
- Vital Nutrients NAC 600mg | N-Acetyl Cysteine | Vegan NAC Supplement | Antioxidant for Sinus, Liver, Immune, and Respiratory Health* | Gluten, Dairy, Soy Free | 100 Capsules

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-23*