Histamine Blocker for Allergies - Quercetin, Stinging Nettle Flavonoids Natural Antihistamine Tablets - Allergy Relief Supplements & Antihistamines for Adults - 60 Vegan Histamine Block Capsules
- 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.
| Diet Type | Vegan, Gluten Free |
| Special Ingredients | Quercetin, Stinging Nettle |
| Ingredients | Quercetin Dihydrate, Hypromellose (capsule), Organic Rice Fiber, Stinging Nettle (urtica Dioica L., Aerial Parts) Extract 10:1, Artemisia Annua L. Extract 10:1 |
| Expiry Date | Dec 2027 |
| Item Weight | 1.76 Ounces |
| Product Benefits | Natural Allergy Relief. Metabolizes Excess Histamine. |
| Age Range (description) | Adult |
| Primary Supplement Type | Quercetin |
| Flavor | Histamine Block Unflavored |
| Item Form | Capsule |
| Product Type | Nutritional Supplement |
| Unit Count | 60 Count |
| Brand | Windsor Botanicals |
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Enjoy free delivery on orders above CA$ 250.
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Orders are processed and shipped from Toronto.
3-6 days (Domestic)
30-Day Return Guarantee
Confidence-backed purchases with 30-day return support.
SKU |
BRSRMGAFPJ6QOF32 |
Category |
Health Care , Over-the-Counter Medication , Allergy, Sinus & Asthma , Allergy Medicine |
Tags |
Important information
Ingredients
Quercetin dihydrate, Stinging Nettle (Urtica dioica L., aerial parts) Extract 10:1, Artemisia annua L. Extract 10:1, Hypromellose (capsule), organic rice fiber
Legal Disclaimer
Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
Package Dimensions
4.13 x 1.97 x 1.89 inches; 1.76 ounces
Shipping & Delivery
At Nutricity, we aim to deliver your order as quickly and safely as possible.
Domestic Shipping :
Orders are typically delivered within 3–6 business days.
International Shipping:
Estimated delivery time is 12–26 business days, depending on the destination and customs processing.
You will receive a tracking number once your order has been dispatched. Delivery times may vary during holidays or due to unforeseen delays.









