Last update
4/7/2026
Reviewed By
Overview
SCIENTIFIC SCORE
Moderately Effective
Based on 1 Research
8
USERS' SCORE
Good
Based on 2 Reviews
8.3
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
**
Top Medical Research Studies
8
We examined how quercetin, a natural compound, can help alleviate chronic cough by targeting P2X3 receptors, which are involved in cough reflexes. The study involved testing its effects on male mice and guinea pigs.
Results showed that quercetin effectively modulated these receptors without causing adverse taste effects, unlike other drugs like gefapixant. This potential opens up new avenues for treating chronic cough without unpleasant side effects.
Results showed that quercetin effectively modulated these receptors without causing adverse taste effects, unlike other drugs like gefapixant. This potential opens up new avenues for treating chronic cough without unpleasant side effects.
Read More
Most Useful Reviews
7.5
Notable improvement
2 people found this helpful
This quercetin supplement appears high-quality, and I've noticed the difference in my health. I've reordered it as it has effectively combatted my chronic infections. I'm pleased with my progress thus far.
Read More
7.5
Chronic rhinitis remedy
1 people found this helpful
I ordered quercetin to combat my chronic vasomotor rhinitis, which has affected me for over a decade. It's an excellent remedy but requires consistent use. Facing a dilemma between enduring vasoconstrictor sprays or taking quercetin, I prefer quercetin given its lesser harmfulness and encouraging reviews regarding its benefits in treating COVID-19.
Read More
Medical Researches
SCIENTIFIC SCORE
Moderately Effective
Based on 1 Research
8
- All Researches
8
We examined how quercetin, a natural compound, can help alleviate chronic cough by targeting P2X3 receptors, which are involved in cough reflexes. The study involved testing its effects on male mice and guinea pigs.
Results showed that quercetin effectively modulated these receptors without causing adverse taste effects, unlike other drugs like gefapixant. This potential opens up new avenues for treating chronic cough without unpleasant side effects.
Results showed that quercetin effectively modulated these receptors without causing adverse taste effects, unlike other drugs like gefapixant. This potential opens up new avenues for treating chronic cough without unpleasant side effects.
Read More
User Reviews
USERS' SCORE
Good
Based on 2 Reviews
8.3
- All Reviews
- Positive Reviews
- Negative Reviews
7.5
Notable improvement
2 people found this helpful
This quercetin supplement appears high-quality, and I've noticed the difference in my health. I've reordered it as it has effectively combatted my chronic infections. I'm pleased with my progress thus far.
Read More
7.5
Chronic rhinitis remedy
1 people found this helpful
I ordered quercetin to combat my chronic vasomotor rhinitis, which has affected me for over a decade. It's an excellent remedy but requires consistent use. Facing a dilemma between enduring vasoconstrictor sprays or taking quercetin, I prefer quercetin given its lesser harmfulness and encouraging reviews regarding its benefits in treating COVID-19.
Read More
Frequently Asked Questions
7.5
Chronic rhinitis remedy
1 people found this helpful
I ordered quercetin to combat my chronic vasomotor rhinitis, which has affected me for over a decade. It's an excellent remedy but requires consistent use. Facing a dilemma between enduring vasoconstrictor sprays or taking quercetin, I prefer quercetin given its lesser harmfulness and encouraging reviews regarding its benefits in treating COVID-19.
8
We examined how quercetin, a natural compound, can help alleviate chronic cough by targeting P2X3 receptors, which are involved in cough reflexes. The study involved testing its effects on male mice and guinea pigs.
Results showed that quercetin effectively modulated these receptors without causing adverse taste effects, unlike other drugs like gefapixant. This potential opens up new avenues for treating chronic cough without unpleasant side effects.
Results showed that quercetin effectively modulated these receptors without causing adverse taste effects, unlike other drugs like gefapixant. This potential opens up new avenues for treating chronic cough without unpleasant side effects.
References
- Guo CR, Zhang ZZ, Zhou X, Sun MY, Li TT, et al. Chronic cough relief by allosteric modulation of P2X3 without taste disturbance. Nat Commun. 2023;14:5844. 10.1038/s41467-023-41495-0
Data last updated:
