5/25/2025
Last update
5/25/2025
Reviewed By
Overview
SCIENTIFIC SCORE
Moderately Effective
Based on 8 Researches
8
USERS' SCORE
Good
Based on 7 Reviews
8.3
Supplement Facts
Serving Size: 1 Vegetarian Capsule
Amount Per Serving
%DV
Vitamin C (from ascorbic acid, camu-camu berry extract)
30 mg
33%
Quercetin (as quercetin dihydrate)
250 mg
**
Optimized Food Blend[onion (bulb) (extracts), bitter orange bioflavonoids (peel and fruit), apple (fruit)
220 mg
**
Camu-camu extract (wildcrafted berry)
50 mg
**
Top Medical Research Studies
8
We investigated quercetin's potential to combat pneumonia and its inflammatory effects triggered by lipopolysaccharide (LPS) using human alveolar epithelial cells. Our findings revealed that quercetin significantly reduced the release of key inflammatory markers and apoptosis in these cells, suggesting it may help manage lung inflammation. By activating the Nrf2 signaling pathway, quercetin not only diminishes inflammation but also protects cells from oxidative stress. Overall, while quercetin shows promise, its effectiveness as a standalone treatment for pneumonia remains unclear.
Read More
9
Quercetin protects against lung injury
This study asked if quercetin, a natural compound, could help treat lung damage caused by particulate matter (PM), a common air pollutant. We treated mice with PM alongside quercetin and noticed significant improvements, as quercetin reduced lung inflammation, fibrosis, and harmful lipid accumulation.
By working through a specific signaling pathway (Nrf2-Keap1), quercetin not only diminished the markers of ferroptosis but also decreased inflammatory responses. Our findings highlight quercetin's potential as a protective agent against air pollution-related lung injuries.
By working through a specific signaling pathway (Nrf2-Keap1), quercetin not only diminished the markers of ferroptosis but also decreased inflammatory responses. Our findings highlight quercetin's potential as a protective agent against air pollution-related lung injuries.
Read More
8
We explored how quercetin, a natural flavonoid found in fruits and veggies, impacts pneumonia caused by the pathogen Pseudomonas aeruginosa. Through various experiments, we found that quercetin helps lessen inflammation in the lungs by reducing harmful cell signals and cytokines typically associated with infection. Mice treated with quercetin showed fewer symptoms of lung injury and lower levels of inflammatory proteins compared to untreated mice. Simply put, quercetin appears to offer protective effects against lung inflammation triggered by this opportunistic pathogen.
Read More
Most Useful Reviews
7.5
Preventative measure
1 people found this helpful
It effectively helps prevent Wuhan pneumonia. If you feel unwell, just take one tablet and you'll feel better. It's an excellent formula!
Read More
9
Reduces coughing attacks
Quercetin benefits the vascular walls of capillaries, lowers blood viscosity, and prevents thrombus formation. It can help individuals with pneumonia, chronic bronchitis, asthma, and COPD by reducing attack frequency, coughing, shortness of breath, bronchial swelling, and improving lung function and breathing. It's used in treatment and recovery from covid.
Read More
9
Excellent anti-inflammatory
Quercetin is crucial for treating pneumonia due to its excellent anti-inflammatory properties. It strengthens the immune system and protects cells from damage!
Read More
Medical Researches
SCIENTIFIC SCORE
Moderately Effective
Based on 8 Researches
8
- All Researches
9
Quercetin protects against lung injury
This study asked if quercetin, a natural compound, could help treat lung damage caused by particulate matter (PM), a common air pollutant. We treated mice with PM alongside quercetin and noticed significant improvements, as quercetin reduced lung inflammation, fibrosis, and harmful lipid accumulation.
By working through a specific signaling pathway (Nrf2-Keap1), quercetin not only diminished the markers of ferroptosis but also decreased inflammatory responses. Our findings highlight quercetin's potential as a protective agent against air pollution-related lung injuries.
By working through a specific signaling pathway (Nrf2-Keap1), quercetin not only diminished the markers of ferroptosis but also decreased inflammatory responses. Our findings highlight quercetin's potential as a protective agent against air pollution-related lung injuries.
Read More
9
Quercetin aids H1N1 pneumonia treatment
We explored the therapeutic abilities of quercetin and other flavonoids from Houttuynia cordata against H1N1-induced pneumonia in mice. Our findings confirmed that quercetin, along with hyperoside and quercitrin, significantly reduced inflammation and improved lung health in the study subjects.
The conversion of these flavonoids by intestinal bacteria into quercetin appeared to enhance their therapeutic effects. Overall, our research highlights quercetin's potential as a supportive treatment for respiratory conditions caused by H1N1, showing promise for further exploration in human studies.
The conversion of these flavonoids by intestinal bacteria into quercetin appeared to enhance their therapeutic effects. Overall, our research highlights quercetin's potential as a supportive treatment for respiratory conditions caused by H1N1, showing promise for further exploration in human studies.
Read More
8
We investigated quercetin's potential to combat pneumonia and its inflammatory effects triggered by lipopolysaccharide (LPS) using human alveolar epithelial cells. Our findings revealed that quercetin significantly reduced the release of key inflammatory markers and apoptosis in these cells, suggesting it may help manage lung inflammation. By activating the Nrf2 signaling pathway, quercetin not only diminishes inflammation but also protects cells from oxidative stress. Overall, while quercetin shows promise, its effectiveness as a standalone treatment for pneumonia remains unclear.
Read More
8
We explored how quercetin, a natural flavonoid found in fruits and veggies, impacts pneumonia caused by the pathogen Pseudomonas aeruginosa. Through various experiments, we found that quercetin helps lessen inflammation in the lungs by reducing harmful cell signals and cytokines typically associated with infection. Mice treated with quercetin showed fewer symptoms of lung injury and lower levels of inflammatory proteins compared to untreated mice. Simply put, quercetin appears to offer protective effects against lung inflammation triggered by this opportunistic pathogen.
Read More
8
We explored a new approach for treating pneumonia using engineered "zombie" macrophages as carriers for quercetin, a natural compound. These macrophages showed better stability than live ones, allowing us to store them and use them as needed.
In tests with mice suffering from acute pneumonia, the "zombie" macrophages effectively delivered quercetin to inflamed lung tissues and helped reduce inflammation. This shows promise for quicker and more effective treatments in acute cases.
In tests with mice suffering from acute pneumonia, the "zombie" macrophages effectively delivered quercetin to inflamed lung tissues and helped reduce inflammation. This shows promise for quicker and more effective treatments in acute cases.
Read More
User Reviews
USERS' SCORE
Good
Based on 7 Reviews
8.3
- All Reviews
- Positive Reviews
- Negative Reviews
7.5
Preventative measure
1 people found this helpful
It effectively helps prevent Wuhan pneumonia. If you feel unwell, just take one tablet and you'll feel better. It's an excellent formula!
Read More
9
Reduces coughing attacks
Quercetin benefits the vascular walls of capillaries, lowers blood viscosity, and prevents thrombus formation. It can help individuals with pneumonia, chronic bronchitis, asthma, and COPD by reducing attack frequency, coughing, shortness of breath, bronchial swelling, and improving lung function and breathing. It's used in treatment and recovery from covid.
Read More
9
Excellent anti-inflammatory
Quercetin is crucial for treating pneumonia due to its excellent anti-inflammatory properties. It strengthens the immune system and protects cells from damage!
Read More
9
Major difference noted
1 people found this helpful
If you're not already taking Quercetin, you should. I incorporated it into my vitamin routine with amazing results. My boyfriend, susceptible to pneumonia, caught covid from a coworker and I increased his dosage. It significantly improved his immune strength, helping him recover from the fatigue the virus caused. I highly recommend it!
Read More
7.5
Boosts immune strength
I consider Quercetin a very useful supplement due to its properties: it blocks free radicals with its antioxidant activity, aids in fighting chronic disease, and reduces inflammation and pain. Additionally, it regulates blood pressure and combats seasonal viral infections, as it reduces viral replication and the viral load in influenza and pneumonia. I've been taking it twice a year; the capsules are a comfortable size, and I experience no negative reactions. During use, I feel invigorated and resilient during workouts, and my allergic rhinitis symptoms have lessened, leading to fewer colds. Be healthy and happy!
Read More
Frequently Asked Questions
7.5
Preventative measure
1 people found this helpful
It effectively helps prevent Wuhan pneumonia. If you feel unwell, just take one tablet and you'll feel better. It's an excellent formula!
9
Major difference noted
1 people found this helpful
If you're not already taking Quercetin, you should. I incorporated it into my vitamin routine with amazing results. My boyfriend, susceptible to pneumonia, caught covid from a coworker and I increased his dosage. It significantly improved his immune strength, helping him recover from the fatigue the virus caused. I highly recommend it!
9
Reduces coughing attacks
Quercetin benefits the vascular walls of capillaries, lowers blood viscosity, and prevents thrombus formation. It can help individuals with pneumonia, chronic bronchitis, asthma, and COPD by reducing attack frequency, coughing, shortness of breath, bronchial swelling, and improving lung function and breathing. It's used in treatment and recovery from covid.
9
Excellent anti-inflammatory
Quercetin is crucial for treating pneumonia due to its excellent anti-inflammatory properties. It strengthens the immune system and protects cells from damage!
6
Supports recovery process
There's research indicating it helps the immune system combat upper respiratory diseases. After I recovered from a mild form of covid, I plan to use Quercetin for coughs, bronchitis, and pneumonia, and share it with my parents.
8
We investigated quercetin's potential to combat pneumonia and its inflammatory effects triggered by lipopolysaccharide (LPS) using human alveolar epithelial cells. Our findings revealed that quercetin significantly reduced the release of key inflammatory markers and apoptosis in these cells, suggesting it may help manage lung inflammation. By activating the Nrf2 signaling pathway, quercetin not only diminishes inflammation but also protects cells from oxidative stress. Overall, while quercetin shows promise, its effectiveness as a standalone treatment for pneumonia remains unclear.
8
We explored how quercetin, a natural flavonoid found in fruits and veggies, impacts pneumonia caused by the pathogen Pseudomonas aeruginosa. Through various experiments, we found that quercetin helps lessen inflammation in the lungs by reducing harmful cell signals and cytokines typically associated with infection. Mice treated with quercetin showed fewer symptoms of lung injury and lower levels of inflammatory proteins compared to untreated mice. Simply put, quercetin appears to offer protective effects against lung inflammation triggered by this opportunistic pathogen.
9
Quercetin aids H1N1 pneumonia treatment
We explored the therapeutic abilities of quercetin and other flavonoids from Houttuynia cordata against H1N1-induced pneumonia in mice. Our findings confirmed that quercetin, along with hyperoside and quercitrin, significantly reduced inflammation and improved lung health in the study subjects.
The conversion of these flavonoids by intestinal bacteria into quercetin appeared to enhance their therapeutic effects. Overall, our research highlights quercetin's potential as a supportive treatment for respiratory conditions caused by H1N1, showing promise for further exploration in human studies.
The conversion of these flavonoids by intestinal bacteria into quercetin appeared to enhance their therapeutic effects. Overall, our research highlights quercetin's potential as a supportive treatment for respiratory conditions caused by H1N1, showing promise for further exploration in human studies.
7
We examined how quercetin affected inflammation in pneumonia using a mouse model. In our experiment, mice were divided into different groups receiving quercetin, fraxin, dexamethasone, or a combination of fraxin and quercetin before being induced with a pneumonia-like condition.
All treatments appeared to lower harmful cytokines and protect tissues from damage. While quercetin showed promise, its impact was generally comparable to other treatments without a standout effect.
This research provides insights into potential anti-inflammatory strategies, though we found no significant benefits uniquely attributed to quercetin.
All treatments appeared to lower harmful cytokines and protect tissues from damage. While quercetin showed promise, its impact was generally comparable to other treatments without a standout effect.
This research provides insights into potential anti-inflammatory strategies, though we found no significant benefits uniquely attributed to quercetin.
References
- Philippova A, Aringazina R, Lozano R, Tikhonova Y. Correction of hypoxic effects on target organs in pneumonia with phytotherapy. J Complement Integr Med. 2025;22:200. 10.1515/jcim-2024-0214
- Shaker NS, Sahib HB, Tahseen NJ. Anti-cytokine Storm Activity of Fraxin, Quercetin, and their Combination on Lipopolysaccharide-Induced Cytokine Storm in Mice: Implications in COVID-19. Iran J Med Sci. 2024;49:322. 10.30476/ijms.2023.98947.3102
- Lv P, Han P, Cui Y, Chen Q, Cao W. Quercetin attenuates inflammation in LPS-induced lung epithelial cells via the Nrf2 signaling pathway. Immun Inflamm Dis. 2024;12:e1185. 10.1002/iid3.1185
- Jia X, Gu M, Dai J, Wang J, Zhang Y, et al. Quercetin attenuates Pseudomonas aeruginosa-induced acute lung inflammation by inhibiting PI3K/AKT/NF-κB signaling pathway. Inflammopharmacology. 2024;32:1059. 10.1007/s10787-023-01416-5
- Ding S, Jiang J, Li Y. Quercetin alleviates PM-induced chronic lung injury in mice by targeting ferroptosis. PeerJ. 2024;12:e16703. 10.7717/peerj.16703
- Xu X, Kwong CHT, Li J, Wei J, Wang R. "Zombie" Macrophages for Targeted Drug Delivery to Treat Acute Pneumonia. ACS Appl Mater Interfaces. 2023;15:29012. 10.1021/acsami.3c06025
- Tang J, Zhou L, Yuan G, Liu Y, Shi X, et al. Therapeutic effects on H1N1-induced pneumonia in mice and intestinal bacteria biotransformation of four main flavonoids from Houttuynia cordata Thunb. J Pharm Biomed Anal. 2023;233:115469. 10.1016/j.jpba.2023.115469
- Sun YL, Zhao PP, Zhu CB, Jiang MC, Li XM, et al. Integrating metabolomics and network pharmacology to assess the effects of quercetin on lung inflammatory injury induced by human respiratory syncytial virus. Sci Rep. 2023;13:8051. 10.1038/s41598-023-35272-8
