Last update
4/19/2026
Reviewed By
Overview
SCIENTIFIC SCORE
No researches found
N/A
USERS' SCORE
Good
Based on 9 Reviews
8.6
Supplement Facts
Serving Size: 1 Vegetarian capsule
Amount Per Serving
%DV
Bio-Quercetin® Proprietary Blend providing 35% quercetin (10 mg) [from Japanese sophora concentrate flower bud)], 30% galactomannans (8 mg) [from fenugreek (seed)]
30 mg
**
Most Useful Reviews
10
Effective for symptoms
32 people found this helpful
LOVE, LOVE, LOVE THIS BIO-QUERCETIN! It has significantly helped with my histamine intolerance symptoms, which began three years ago with hives. I take two capsules daily with food. I also include both powdered and fresh ginger in my morning smoothie, as it is a natural anti-histamine. The combination of Bio-Quercetin and ginger has completely banished my symptoms. Thank you, iHerb, for keeping this fantastic item in stock!
Read More
9
Quick relief experienced
1 people found this helpful
During COVID, I started using various remedies, but ended up with itching, swelling, and hives. I was hesitant to use pharmacy antihistamines, so I tried a pill of bioquercetin. To my surprise, it worked quickly! Within 15 minutes, my symptoms subsided completely—what an astonishing effect!
Read More
9
Eased hives crises
Great! I discovered I had hives and started using quercetin along with other supplements, which has greatly eased my crises. The products are of high quality with good ingredients and have significantly helped my immune system.
Read More
User Reviews
USERS' SCORE
Good
Based on 9 Reviews
8.6
- All Reviews
- Positive Reviews
- Negative Reviews
10
Effective for symptoms
32 people found this helpful
LOVE, LOVE, LOVE THIS BIO-QUERCETIN! It has significantly helped with my histamine intolerance symptoms, which began three years ago with hives. I take two capsules daily with food. I also include both powdered and fresh ginger in my morning smoothie, as it is a natural anti-histamine. The combination of Bio-Quercetin and ginger has completely banished my symptoms. Thank you, iHerb, for keeping this fantastic item in stock!
Read More
9
Quick relief experienced
1 people found this helpful
During COVID, I started using various remedies, but ended up with itching, swelling, and hives. I was hesitant to use pharmacy antihistamines, so I tried a pill of bioquercetin. To my surprise, it worked quickly! Within 15 minutes, my symptoms subsided completely—what an astonishing effect!
Read More
9
Eased hives crises
Great! I discovered I had hives and started using quercetin along with other supplements, which has greatly eased my crises. The products are of high quality with good ingredients and have significantly helped my immune system.
Read More
9
Exceptional allergy aid
This product is exceptional for allergies and keeping hives at bay. The ingredients seem to be more bioavailable than others I've tried.
Read More
9
Immediate hives relief
I take this when the hives start to escalate. Only one capsule alleviates my hives within 20 minutes! I am very grateful for this product, as it has allowed me to stop taking antihistamines, which have not been effective in the long run.
Read More
Frequently Asked Questions
9
Quick relief experienced
1 people found this helpful
During COVID, I started using various remedies, but ended up with itching, swelling, and hives. I was hesitant to use pharmacy antihistamines, so I tried a pill of bioquercetin. To my surprise, it worked quickly! Within 15 minutes, my symptoms subsided completely—what an astonishing effect!
9
Immediate hives relief
I take this when the hives start to escalate. Only one capsule alleviates my hives within 20 minutes! I am very grateful for this product, as it has allowed me to stop taking antihistamines, which have not been effective in the long run.
7.5
Reduced hives severity
14 people found this helpful
Almost a miracle! After about a week of taking this, I thought I had finally found my saviour, as I had stopped experiencing daily hives and full histamine reactions. However, on the ninth day, I began reacting again daily. It's now been three weeks, and although it isn't the miracle I initially believed, my reactions have mostly decreased in severity.
10
Effective for symptoms
32 people found this helpful
LOVE, LOVE, LOVE THIS BIO-QUERCETIN! It has significantly helped with my histamine intolerance symptoms, which began three years ago with hives. I take two capsules daily with food. I also include both powdered and fresh ginger in my morning smoothie, as it is a natural anti-histamine. The combination of Bio-Quercetin and ginger has completely banished my symptoms. Thank you, iHerb, for keeping this fantastic item in stock!
7.5
Good alternative found
1 people found this helpful
I have suffered from chronic hives for several years and have taken antihistamines. I tried this as an alternative, and although it doesn’t completely replace my usual treatment, it has helped alleviate my symptoms significantly.
9
Eased hives crises
Great! I discovered I had hives and started using quercetin along with other supplements, which has greatly eased my crises. The products are of high quality with good ingredients and have significantly helped my immune system.
