5/5/2025
Last update
5/5/2025
Reviewed By
Overview
SCIENTIFIC SCORE
Moderately Effective
Based on 1 Research
8
USERS' SCORE
Good
Based on 11 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
9
Cough reduction
8 people found this helpful
After enduring COVID, I've found quercetin essential for managing my chronic cough and supporting my respiratory health. I learned about it half a year ago during post-COVID recovery discussions. Following my doctor's advice, I've been taking it for two months alongside other medications. The results have been excellent: my cough has noticeably decreased, and I experience far fewer obstructions and seasonal colds. Quercetin also appears to ease COVID symptoms for friends, speeding up recovery without causing allergic reactions or other side effects.
Read More
9
Overall health booster
3 people found this helpful
Quercetin serves as a strong natural bioflavonoid that enhances the body's defence against harmful factors, notably benefiting those with broncho-pulmonary conditions such as pneumonia, chronic bronchitis, and asthma. It facilitates a quicker recovery and lessens chronic cough, improving bronchial function. The product's extensive biological properties offer numerous health benefits, making it a valuable supplement for immune and respiratory health.
Read More
9
Bronchial support
1 people found this helpful
Quercetin is beneficial for those with pneumonia, chronic bronchitis, asthma, and allergies. It promotes faster recovery, reduces seizures, and helps alleviate the chronic cough while improving bronchial patency. Its effects are noted during the course of treatment. I would recommend this bioavailable product for those suffering from respiratory issues.
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 11 Reviews
8.3
- All Reviews
- Positive Reviews
- Negative Reviews
9
Cough reduction
8 people found this helpful
After enduring COVID, I've found quercetin essential for managing my chronic cough and supporting my respiratory health. I learned about it half a year ago during post-COVID recovery discussions. Following my doctor's advice, I've been taking it for two months alongside other medications. The results have been excellent: my cough has noticeably decreased, and I experience far fewer obstructions and seasonal colds. Quercetin also appears to ease COVID symptoms for friends, speeding up recovery without causing allergic reactions or other side effects.
Read More
9
Overall health booster
3 people found this helpful
Quercetin serves as a strong natural bioflavonoid that enhances the body's defence against harmful factors, notably benefiting those with broncho-pulmonary conditions such as pneumonia, chronic bronchitis, and asthma. It facilitates a quicker recovery and lessens chronic cough, improving bronchial function. The product's extensive biological properties offer numerous health benefits, making it a valuable supplement for immune and respiratory health.
Read More
9
Bronchial support
1 people found this helpful
Quercetin is beneficial for those with pneumonia, chronic bronchitis, asthma, and allergies. It promotes faster recovery, reduces seizures, and helps alleviate the chronic cough while improving bronchial patency. Its effects are noted during the course of treatment. I would recommend this bioavailable product for those suffering from respiratory issues.
Read More
9
Year-round relief
1 people found this helpful
I've been taking quercetin for over a year due to its lung protection benefits post-COVID. Remarkably, it has eliminated my chronic allergy cough. I switched to Life Extension Bio-Quercetin for better absorption and am very satisfied with the results. The quality is evident, and I've noticed significant health benefits. I'll definitely continue using it.
Read More
10
Cough completely gone
The child consumed it when suffering from a cough, and within approximately 12 days, she ceased coughing and has been thriving ever since.
Read More
Frequently Asked Questions
9
Quick relief experienced
The capsules are quite small and simple to swallow. I had been coughing persistently for a long time, but after just a few days of taking them, I felt significantly better.
9
Quick recovery
1 people found this helpful
I purchased quercetin for my daughters after seeing them suffer from acute respiratory infections post-holidays. Along with several vitamins, it worked wonders. Within two days, after a severe cough and high temperature, all symptoms vanished. This was the quickest recovery I've witnessed, and I highly recommend it.
9
Cough reduction
8 people found this helpful
After enduring COVID, I've found quercetin essential for managing my chronic cough and supporting my respiratory health. I learned about it half a year ago during post-COVID recovery discussions. Following my doctor's advice, I've been taking it for two months alongside other medications. The results have been excellent: my cough has noticeably decreased, and I experience far fewer obstructions and seasonal colds. Quercetin also appears to ease COVID symptoms for friends, speeding up recovery without causing allergic reactions or other side effects.
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.
9
Year-round relief
1 people found this helpful
I've been taking quercetin for over a year due to its lung protection benefits post-COVID. Remarkably, it has eliminated my chronic allergy cough. I switched to Life Extension Bio-Quercetin for better absorption and am very satisfied with the results. The quality is evident, and I've noticed significant health benefits. I'll definitely continue using it.
10
Cough completely gone
The child consumed it when suffering from a cough, and within approximately 12 days, she ceased coughing and has been thriving ever since.
9
Overall health booster
3 people found this helpful
Quercetin serves as a strong natural bioflavonoid that enhances the body's defence against harmful factors, notably benefiting those with broncho-pulmonary conditions such as pneumonia, chronic bronchitis, and asthma. It facilitates a quicker recovery and lessens chronic cough, improving bronchial function. The product's extensive biological properties offer numerous health benefits, making it a valuable supplement for immune and respiratory health.
6
Allergy relief
15 people found this helpful
Good afternoon! I began taking quercetin to reduce allergic reactions to toxic medications. After recommendations from a therapist, I took it out of despair. While my allergies, including the chronic cough, haven't fully disappeared, they have significantly lessened. My overall condition has improved, giving me more energy and clarity. The toxic effects of my medications have also decreased. I settled on a dosage of one capsule daily because two made it difficult to sleep at night.
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
