---
product_id: 63589915
title: "Quercetin Phytosome, Highly Bioavailable Quercetin, 60 Capsules | Supports Seasonal Immune Function, Respiratory Tract Health & Healthy Aging, Antioxidant Support*, NSF Contents Certified"
brand: "thorne"
price: "€ 102.43"
currency: EUR
in_stock: true
reviews_count: 13
category: "Thorne"
url: https://www.desertcart.hr/products/63589915-quercetin-phytosome-highly-bioavailable-quercetin-60-capsules-supports-seasonal-immune
store_origin: HR
region: Croatia
---

# Cellular health & healthy aging Respiratory inflammation relief Year-round immune support Quercetin Phytosome, Highly Bioavailable Quercetin, 60 Capsules | Supports Seasonal Immune Function, Respiratory Tract Health & Healthy Aging, Antioxidant Support*, NSF Contents Certified

**Brand:** thorne
**Price:** € 102.43
**Availability:** ✅ In Stock

## Summary

> 🛡️ Unlock peak immunity and breathe freely—because your health deserves the best.

## Quick Answers

- **What is this?** Quercetin Phytosome, Highly Bioavailable Quercetin, 60 Capsules | Supports Seasonal Immune Function, Respiratory Tract Health & Healthy Aging, Antioxidant Support*, NSF Contents Certified by thorne
- **How much does it cost?** € 102.43 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/63589915-quercetin-phytosome-highly-bioavailable-quercetin-60-capsules-supports-seasonal-immune)

## Best For

- thorne enthusiasts

## Why This Product

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

## Key Features

- • **Elite Immune Shield:** Boost your body's frontline defense with clinically backed immune cell support.
- • **Breathe Easy Formula:** Promotes a balanced inflammatory response in your respiratory tract for clearer days.
- • **Seasonal Allergy Savior:** Regulates histamine release so you can enjoy allergy seasons without the meds.
- • **Clinically Trusted Brand:** Endorsed by 100+ pro sports teams and top healthcare practitioners for unmatched quality.
- • **Age Gracefully, Powerfully:** Combats oxidative stress to keep your cells youthful and resilient.

## Overview

THORNE Quercetin Phytosome delivers highly bioavailable quercetin using patented phytosome technology, supporting immune function, respiratory health, and healthy aging. Trusted by professionals and allergy sufferers alike, this gluten-free, allergen-free antioxidant supplement offers 60 capsules designed for adults seeking year-round wellness and natural inflammation relief.

## Description

Buy THORNE Quercetin Phytosome, Highly Bioavailable Quercetin, 60 Capsules | Supports Seasonal Immune Function, Respiratory Tract Health & Healthy Aging, Antioxidant Support*, NSF Contents Certified on desertcart.com ✓ FREE SHIPPING on qualified orders

Review: Real phytosome, unlike other brands - I bought this brand because it has a license from Indena S.p.A for the phytosome technology whereas most quercetin phytosomes don't and do not have the same absorption. For normal colds, this is probably overkill, but I had a persistent cough from a cold, and I also had inflammation from a slipped rib that simply wouldn't go away after a couple months. I used this since quercetin is a powerful anti-inflammatory (besides being an ionophore), and the inflammation in my ribs was completely gone in two days. Even after the first day of trying it, the pain was about 70% gone. It might be a coincidence, but I was trying all forms of exercise that didn't help. I'm not sure it helped with the cough, which went away slowly.
Review: Allergy relief - Helps my allergies! I use daily during allergy season and I don't have to take medication

## Features

- Immune Function: Provides year-round immune support by promoting various types of immune cells that are necessary for an optimized immune response*
- Respiratory Support: Supports a healthy inflammatory response in the respiratory tract*
- Healthy Aging: Mitigates oxidative stress and supports cellular health*
- Seasonal Allergies: Benefits allergy sufferers by helping to regulate histamine release*
- Trusted: Thorne is trusted by 100+ professional sports teams and the #1 most recommended clinical brand by consumers and health-care practitioners (Based on a 2026 independent survey of US supplement consumers and health-care practitioners)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0797DQTVZ |
| ASIN  | B0797DQTVZ |
| Age Range Description | Adult |
| Allergen Information | Dairy Free, Egg Free, Fish Free, Peanut Free, Shellfish Free, Soy Free, Tree Nut Free |
| Best Sellers Rank | #7,383 in Health & Household ( See Top 100 in Health & Household ) #24 in Polyphenol Antioxidant Supplements |
| Brand Name | THORNE |
| Container Type | Bottle |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,380) |
| Date First Available  | June 5, 2014 |
| Diet Type | Gluten Free |
| Dosage Form | Capsule |
| Flavor | Unflavored |
| Item Dimensions | 2.09 x 2.09 x 3.72 inches |
| Item Form | Capsule |
| Item Weight | 2.08 ounces |
| Item model number  | SB335 |
| Manufacturer | Thorne Research |
| Manufacturer  | Thorne Research |
| Manufacturer Part Number | SB335 |
| Model Name | SB335 |
| Model Number | SB335 |
| Number of Items | 1 |
| Primary Supplement Type | antioxidant supplement |
| Product Benefits | Immune Support |
| Product Dimensions  | 2.09 x 2.09 x 3.72 inches; 2.08 ounces |
| Specific Uses For Product | Immune & Allergy Support |
| UPC | 693749004356 |
| Unit Count | 60 Count |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** THORNE
- **Diet Type:** Gluten Free
- **Flavor:** Unflavored
- **Item Form:** Capsule
- **Item Weight:** 2.08 ounces
- **Item dimensions L x W x H:** 2.09 x 2.09 x 3.72 inches
- **Primary Supplement Type:** antioxidant supplement
- **Product Benefits:** Immune Support
- **Unit Count:** 60 Count

## Images

![Quercetin Phytosome, Highly Bioavailable Quercetin, 60 Capsules | Supports Seasonal Immune Function, Respiratory Tract Health & Healthy Aging, Antioxidant Support*, NSF Contents Certified - Image 1](https://m.media-amazon.com/images/I/71aVcjDhxaL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: What makes Thorne supplements high quality?**
A: Thorne produces high-quality supplements through rigorous testing, well-researched ingredient sourcing, and strict manufacturing standards. We avoid unnecessary additives, binders, and fillers that may interfere with nutrient absorption.

**Q: How does Thorne test its supplements for quality?**
A: To confirm the purity of our ingredients, the potency of our formulas, and the absence of all contaminants, we carry out a minimum of four rounds of testing on every product we manufacture. 100+ Thorne employees are dedicated to ensuring quality.

**Q: Are Thorne supplements clinically tested and safe?**
A: Thorne partners with researchers and conducts clinical trials to support the efficacy of our products. Our team of doctors and medical experts substantiate each ingredient in every formula based on extensive clinical research and medical literature.

**Q: Why are Thorne products more expensive than other supplements?**
A: When it comes to the health of our customers, we never settle. Thorne products may be priced higher than some others because of our commitment to quality at every step. We don’t simply meet the standard in dietary supplements — we set the standard.

**Q: Where are Thorne supplements made and where are the ingredients sourced from?**
A: Located in South Carolina, Thorne manufactures supplements in the USA using globally sourced ingredients. When it comes to ingredient sourcing, we seek out only the highest-quality ingredients, selecting each one for its purity and effectiveness.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Real phytosome, unlike other brands
*by K***R on March 23, 2026*

I bought this brand because it has a license from Indena S.p.A for the phytosome technology whereas most quercetin phytosomes don't and do not have the same absorption. For normal colds, this is probably overkill, but I had a persistent cough from a cold, and I also had inflammation from a slipped rib that simply wouldn't go away after a couple months. I used this since quercetin is a powerful anti-inflammatory (besides being an ionophore), and the inflammation in my ribs was completely gone in two days. Even after the first day of trying it, the pain was about 70% gone. It might be a coincidence, but I was trying all forms of exercise that didn't help. I'm not sure it helped with the cough, which went away slowly.

### ⭐⭐⭐⭐⭐ Allergy relief
*by L***D on June 15, 2026*

Helps my allergies! I use daily during allergy season and I don't have to take medication

### ⭐⭐⭐⭐⭐ Absolute best!
*by J***A on May 15, 2026*

Love this manufacturer and this product works the best for me. I cannot afford it any longer though.

## Frequently Bought Together

- THORNE Quercetin Phytosome - Exclusive Phytosome Complex for Immune Health, Respiratory Support, and Seasonal Allergy Relief* - 60 Capsules
- THORNE NAC - N-Acetylcysteine - 500mg - Supports Respiratory Health and Immune Function*; Promotes Liver and Kidney Detox - 90 Capsules
- THORNE Vitamin D-5000 - Vitamin D3 Supplement - Support Healthy Bones, Teeth, Muscles, Cardiovascular, and Immune Function* - NSF Certified for Sport - Dairy-Free, Soy-Free - 60 Capsules

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-08-06*