---
product_id: 512855345
title: "Histamine Blocker for Allergies - Quercetin, Stinging Nettle Flavonoids Natural Antihistamine Tablets - Allergy Relief Supplements & Antihistamines for Adults - 60 Vegan Histamine Block Capsules"
brand: "windsor botanicals"
price: "€ 53.20"
currency: EUR
in_stock: true
reviews_count: 8
category: "Windsor Botanicals"
url: https://www.desertcart.com.cy/products/512855345-histamine-blocker-for-allergies-quercetin-stinging-nettle-flavonoids-natural-antihistamine
store_origin: CY
region: Cyprus
---

# Fast-acting relief in hours 100% vegan & gluten-free 650mg potent plant-based blend Histamine Blocker for Allergies - Quercetin, Stinging Nettle Flavonoids Natural Antihistamine Tablets - Allergy Relief Supplements & Antihistamines for Adults - 60 Vegan Histamine Block Capsules

**Brand:** windsor botanicals
**Price:** € 53.20
**Availability:** ✅ In Stock

## Summary

> 🌿 Unlock natural allergy freedom—because you deserve to breathe easy every day!

## Quick Answers

- **What is this?** Histamine Blocker for Allergies - Quercetin, Stinging Nettle Flavonoids Natural Antihistamine Tablets - Allergy Relief Supplements & Antihistamines for Adults - 60 Vegan Histamine Block Capsules by windsor botanicals
- **How much does it cost?** € 53.20 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/512855345-histamine-blocker-for-allergies-quercetin-stinging-nettle-flavonoids-natural-antihistamine)

## Best For

- windsor botanicals enthusiasts

## Why This Product

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

## Key Features

- • **Made in the USA:** Crafted with care using safe, natural ingredients you can trust
- • **Clean & Conscious:** Vegan, gluten-free, GMO-free—pure allergy relief without compromise 🌱
- • **Breathe Freely Again:** Supports clear airways and sinus health for all-day comfort
- • **Rapid Allergy Relief:** Doctor-formulated to calm histamine spikes fast ⚡
- • **Powerful Plant-Based Formula:** 650mg of quercetin & stinging nettle for natural antihistamine support 🌿

## Overview

Windsor Botanicals’ Histamine Blocker delivers a potent 650mg blend of quercetin, stinging nettle, and artemisia annua in vegan capsules designed to rapidly reduce histamine-related allergy symptoms. Free from GMOs, gluten, and artificial additives, this doctor-formulated supplement supports respiratory comfort and sinus health, offering a clean, natural alternative for adults seeking effective allergy relief.

## Description

Buy Histamine Blocker for Allergies - Quercetin, Stinging Nettle Flavonoids Natural Antihistamine Tablets - Allergy Relief Supplements & Antihistamines for Adults - 60 Vegan Histamine Block Capsules on desertcart.com ✓ FREE SHIPPING on qualified orders

Review: Does the job - It works
Review: Perfect for allergies - Why did you pick this product vs others?: I can definitely tell the difference, they've been a life saver and nice to have instead of constantly taking allergy pills.

## Features

- FAST-ACTING HISTAMINE SUPPLEMENTS. Take control of seasonal discomfort with a doctor-formulated natural antihistamine supplement. Made with powerful plant-based ingredients to support a balanced histamine response.
- ENJOY YOUR FAVORITE FOODS & DRINKS. Multiple irritants can overwhelm natural enzyme production, leading to excess histamine levels. Our histamine block D-Hist quercetin supplements may help ease symptoms like itchy eyes, runny nose, and food sensitivity.
- BREATHE EASIER, FEEL BETTER. Support clear airways and sinus health with our advanced antihistamine tablets. Designed to provide natural relief from allergies, congestion, and respiratory discomfort.
- VEGAN & GLUTEN-FREE. Each easy-to-swallow capsule contains a potent 650mg blend of stinging nettle extract, artemisia annua, and quercetin - completely free from GMOs, gluten, and artificial additives. For best results, take two capsules daily.
- MADE IN USA. Enjoy allergy relief without harsh chemicals or additives. Our histamine block tablets are made in the USA with naturally derived, safe ingredients to help alergy/sinus irritation.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BJL94SNW |
| Age Range Description | Adult |
| Best Sellers Rank | #123,632 in Health & Household ( See Top 100 in Health & Household ) #393 in Allergy Medicine |
| Brand | WINDSOR BOTANICALS |
| Brand Name | WINDSOR BOTANICALS |
| Container Type | Bottle |
| Customer Reviews | 4.1 out of 5 stars 192 Reviews |
| Diet Type | Gluten Free, Vegan |
| Dosage Form | Capsule |
| Flavor | Histamine Block Unflavored |
| Item Form | Capsule |
| Item Weight | 0.11 Pounds |
| Manufacturer | Windsor Botanicals |
| Material Features | GMO Free |
| Number of Items | 1 |
| Primary Supplement Type | Quercetin |
| Product Benefits | Natural allergy relief. Metabolizes excess histamine. |
| Special Ingredients | Quercetin, Stinging Nettle |
| Specific Uses For Product | Eyes |
| Total Servings Per Container | 30 |
| Unit Count | 60 Count |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** WINDSOR BOTANICALS
- **Diet Type:** Gluten Free, Vegan
- **Flavor:** Histamine Block Unflavored
- **Item Form:** Capsule
- **Item Weight:** 0.11 Pounds
- **Primary Supplement Type:** Quercetin
- **Product Benefits:** Natural allergy relief. Metabolizes excess histamine.
- **Special Ingredients:** Quercetin, Stinging Nettle
- **Unit Count:** 60 Count

## Images

![Histamine Blocker for Allergies - Quercetin, Stinging Nettle Flavonoids Natural Antihistamine Tablets - Allergy Relief Supplements & Antihistamines for Adults - 60 Vegan Histamine Block Capsules - Image 1](https://m.media-amazon.com/images/I/81uA+zjGAaL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Does the job
*by K***S on December 11, 2025*

It works

### ⭐⭐⭐⭐⭐ Perfect for allergies
*by A***R on June 20, 2025*

Why did you pick this product vs others?: I can definitely tell the difference, they've been a life saver and nice to have instead of constantly taking allergy pills.

### ⭐ Block Histamine
*by O***S on August 13, 2023*

I have developed allergies to wheat, dairy and egg white. I am doing my very best to stay away from these foods. On occasion I do not pick up that a food contains what I can’t eat. Quite often it may say artificial flavors or colors. I did not realize I would react to these. I purchased the Histamine Block to help me when I slipped up. Unfortunately they don’t work for me.

## Frequently Bought Together

- WINDSOR BOTANICALS Histamine Block Capsules for Alergies - Quercetin Allergy Supplement Antihistamines for Adults - Natural Allergy Relief Extracts Histamine Blocker - 60 Vegan Capsules
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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-02-04*