' 
SCIENTIFIC SCORE
Possibly Effective
Based on 14 Researches
7.5
USERS' SCORE
Good
Based on 10 Reviews
8.7
Supplement Facts
Serving Size: 2 VegCaps
Amount Per Serving
%DV
Vitamin C (as Ascorbic Acid)
1,235 mg
1,372%
Quercetin
465 mg
*
Bromelain (Supplying 90 MCU)
50 mg
*
Top Medical Research Studies
9
Quercetin reduces rhinovirus effects
Quercetin inhibits rhinovirus replication in vitro and in vivo.
Potential treatment for common cold
We investigated whether quercetin, a natural plant compound, could help combat common cold caused by rhinovirus (RV). In our study, quercetin reduced RV replication and inflammation in airway cells both in laboratory settings and in mice. When given before or after infection, quercetin limited the virus's ability to replicate and decreased harmful immune responses.
While our findings are promising, indicating that quercetin acts at various points in the virus's lifecycle, we recognize the need for further research to solidify its effectiveness in treating or preventing common colds.
While our findings are promising, indicating that quercetin acts at various points in the virus's lifecycle, we recognize the need for further research to solidify its effectiveness in treating or preventing common colds.
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8
Quercetin shows promise against HRV2
Anti-human rhinovirus 2 activity and mode of action of quercetin-7-glucoside from Lagerstroemia speciosa.
Moderate relevance for cold treatment.
We investigated how quercetin 7-glucoside (Q7G), sourced from Lagerstroemia speciosa, affects human rhinovirus 2 (HRV2), a leading cause of the common cold. Utilizing a method to reduce cytopathic effects, we found that Q7G significantly reduced HRV2 replication by blocking the virus's early infection stage.
Interestingly, compared to ribavirin, a known antiviral, Q7G showed stronger efficacy, suggesting its potential as a treatment for HRV2. While these results are promising, further research is needed to assess the practicality of using Q7G in common cold therapies.
Interestingly, compared to ribavirin, a known antiviral, Q7G showed stronger efficacy, suggesting its potential as a treatment for HRV2. While these results are promising, further research is needed to assess the practicality of using Q7G in common cold therapies.
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8
Vitamin C reduces cold severity
Vitamin C reduces the severity of common colds: a meta-analysis.
Highly relevant to cold treatments
We explored how vitamin C affects the severity of common colds through a comprehensive review of available studies. By including only randomized, placebo-controlled trials where participants received at least 1 gram of vitamin C daily, we aimed to investigate both the overall duration of colds and the intensity of symptoms experienced.
Our analysis found that vitamin C significantly reduced the severity of cold symptoms by about 15%. Interestingly, it appears that the benefits are more pronounced for those experiencing severe symptoms compared to mild ones. In specific comparisons, vitamin C didn’t substantially affect the duration of mild symptoms but had a notable impact on how long severe symptoms lasted.
This insight is crucial, as the common cold often leads to absenteeism at work and school, with more severe symptoms playing a key role in this setback. By highlighting vitamin C's greater effectiveness against intense cold symptoms, we suggest that future research should continue to look into how this vitamin can be utilized in managing cold severity.
Our analysis found that vitamin C significantly reduced the severity of cold symptoms by about 15%. Interestingly, it appears that the benefits are more pronounced for those experiencing severe symptoms compared to mild ones. In specific comparisons, vitamin C didn’t substantially affect the duration of mild symptoms but had a notable impact on how long severe symptoms lasted.
This insight is crucial, as the common cold often leads to absenteeism at work and school, with more severe symptoms playing a key role in this setback. By highlighting vitamin C's greater effectiveness against intense cold symptoms, we suggest that future research should continue to look into how this vitamin can be utilized in managing cold severity.
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Most Useful Reviews
9.5
Irreplaceable during cold
This complex, featuring Vitamin C and Quercetin, is fantastic during a cold! It really helps me bounce back quickly.
Read More
9.5
Prevents seasonal colds
This is an excellent ingredient for preventing colds, especially in the changing seasons. I give it to my children every two days while they're at school. Thanks to this, I've remained healthy and symptom-free!
Read More
9.5
Reduces colds
This product is highly effective against nasal allergies. I've purchased it numerous times, and I've noticed that my children's allergies have improved, leading to a significant reduction in their colds and better sleep at night.
Read More
Medical Researches
SCIENTIFIC SCORE
Possibly Effective
Based on 14 Researches
7.5
- All Researches
9
Flavonoids reduce cold incidence
Effect of Flavonoids on Upper Respiratory Tract Infections and Immune Function: A Systematic Review and Meta-Analysis.
Review highlights flavonoid effectiveness
We explored the role of flavonoid compounds, like quercetin, in reducing the frequency and severity of upper respiratory tract infections (URTIs) in healthy adults. An in-depth review of 14 studies showed that flavonoid supplementation notably reduced the incidence of URTIs by 33% and sick days by 40%.
However, we noted that changes in immune markers were minimal, indicating that while there are advantages in reducing infections, the immune response may not be significantly affected.
However, we noted that changes in immune markers were minimal, indicating that while there are advantages in reducing infections, the immune response may not be significantly affected.
Read More
9
Quercetin reduces rhinovirus effects
Quercetin inhibits rhinovirus replication in vitro and in vivo.
Potential treatment for common cold
We investigated whether quercetin, a natural plant compound, could help combat common cold caused by rhinovirus (RV). In our study, quercetin reduced RV replication and inflammation in airway cells both in laboratory settings and in mice. When given before or after infection, quercetin limited the virus's ability to replicate and decreased harmful immune responses.
While our findings are promising, indicating that quercetin acts at various points in the virus's lifecycle, we recognize the need for further research to solidify its effectiveness in treating or preventing common colds.
While our findings are promising, indicating that quercetin acts at various points in the virus's lifecycle, we recognize the need for further research to solidify its effectiveness in treating or preventing common colds.
Read More
9
Vitamin C aids common cold recovery
Vitamin C as a Supplementary Therapy in Relieving Symptoms of the Common Cold: A Meta-Analysis of 10 Randomized Controlled Trials.
Moderate relevance due to combination therapy
We explored the potential benefits of vitamin C as a supplementary treatment for relieving common cold symptoms. By analyzing data from 10 randomized controlled trials, all focused on patients in China, we sought to understand how combining vitamin C with antiviral therapy might enhance recovery.
Our findings revealed that vitamin C supplementation could significantly improve overall efficacy, with a reported relative risk of 1.27. Moreover, it was shown to shorten the time it takes for symptoms to get better and for patients to heal, compared to antiviral therapy alone.
While vitamin C seems to have a positive impact when paired with antiviral drugs, it’s essential to note that its individual effects might not be fully clear due to the combined treatment approach used in the studies. Nonetheless, vitamin C presents itself as a promising addition to traditional cold treatments, helping patients manage their symptoms more effectively.
Our findings revealed that vitamin C supplementation could significantly improve overall efficacy, with a reported relative risk of 1.27. Moreover, it was shown to shorten the time it takes for symptoms to get better and for patients to heal, compared to antiviral therapy alone.
While vitamin C seems to have a positive impact when paired with antiviral drugs, it’s essential to note that its individual effects might not be fully clear due to the combined treatment approach used in the studies. Nonetheless, vitamin C presents itself as a promising addition to traditional cold treatments, helping patients manage their symptoms more effectively.
Read More
8
Quercetin's antiviral potential confirmed
Quercetin-3-Methyl Ether Induces Early Apoptosis to Overcome HRV1B Immune Evasion, Suppress Viral Replication, and Mitigate Inflammatory Pathogenesis.
Promising antiviral treatment explored
We explored the effects of quercetin-3-methyl ether, a natural flavonoid, on the common cold virus, specifically human rhinovirus 1B (HRV1B).
In our study, we found that this compound not only inhibited the virus's replication in human cells but also targeted the early stages of infection.
Additionally, quercetin enhanced early cell death to help combat the virus's immune evasion tactics.
While our findings highlight its potential as a new antiviral agent, further research is necessary to confirm its effectiveness in broader treatments.
In our study, we found that this compound not only inhibited the virus's replication in human cells but also targeted the early stages of infection.
Additionally, quercetin enhanced early cell death to help combat the virus's immune evasion tactics.
While our findings highlight its potential as a new antiviral agent, further research is necessary to confirm its effectiveness in broader treatments.
Read More
8
Quercetin shows promise against viruses
Effectiveness of supplementation with quercetin-type flavonols for treatment of viral lower respiratory tract infections: Systematic review and meta-analysis of preclinical studies.
High relevance for respiratory infections
We explored the effectiveness of quercetin-type flavonols in combating viral lower respiratory infections through a systematic review of 11 preclinical studies.
Our findings highlighted quercetin's impressive antiviral activity, showing lower mortality rates and reduced viral loads in infected animals.
Moreover, quercetin appeared to alleviate inflammation and mucus production, suggesting a multifaceted benefit for respiratory health. Overall, quercetin could be a promising option for those facing respiratory viral challenges.
Our findings highlighted quercetin's impressive antiviral activity, showing lower mortality rates and reduced viral loads in infected animals.
Moreover, quercetin appeared to alleviate inflammation and mucus production, suggesting a multifaceted benefit for respiratory health. Overall, quercetin could be a promising option for those facing respiratory viral challenges.
Read More
User Reviews
USERS' SCORE
Good
Based on 10 Reviews
8.7
- All Reviews
- Positive Reviews
- Negative Reviews
9.5
Irreplaceable during cold
This complex, featuring Vitamin C and Quercetin, is fantastic during a cold! It really helps me bounce back quickly.
9.5
Prevents seasonal colds
This is an excellent ingredient for preventing colds, especially in the changing seasons. I give it to my children every two days while they're at school. Thanks to this, I've remained healthy and symptom-free!
9.5
Reduces colds
This product is highly effective against nasal allergies. I've purchased it numerous times, and I've noticed that my children's allergies have improved, leading to a significant reduction in their colds and better sleep at night.
9.5
Effective for cough
Excellent results! This is a fantastic complex for allergies and viral diseases. It helped alleviate a chronic cough. We also give it to our children at the onset of colds; it assists them in recovering more quickly.
8.8
Helps children recover
My children struggled with frequent colds despite their best efforts. After exploring various medications, I opted for this dietary supplement, which arrived quickly. Although taken irregularly by my daughter, I've noticed improvements in their sinus issues; I believe it's down to the quercetin!
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