Overview

SCIENTIFIC SCORE
Possibly Effective
Based on 16 Researches
7.9
USERS' SCORE
Good
Based on 3 Reviews
8.7
Supplement Facts
Serving Size: 2 Capsules
Amount Per Serving
%DV
Calories
5
 
Total Carbohydrate 
1 g 
<1%*
Proprietary Extract BlendOrganic Echinacea purpurea root, seed and aerial parts, Organic Echinacea angustifolia root, Organic Echinacea purpurea root supercritical CO2 extract.
955 mg 
Alkylamides
3 mg

Top Medical Research Studies

9
Echinacea shows promise against influenza
We focused on how echinacea, a well-known wildflower, can combat viruses that commonly cause respiratory infections, specifically influenza A and B, as well as respiratory syncytial virus (RSV). Through a methodical approach, we evaluated the effects of a 60% ethanol extract of echinacea and its active compound, chicoric acid (CA), on these viruses.

Our research utilized various tests to measure the antiviral effectiveness of echinacea. We observed that both the extract and chicoric acid significantly reduced the infectivity of H1N1, IVB, and RSV-A in controlled experiments. Notably, our findings indicated a decrease in viral gene expression and confirmed through microscopy that echinacea's components could limit the ability of these viruses to infect host cells.

Additionally, we found that echinacea's extract and chicoric acid effectively hindered the attachment of H1N1 and IVB viruses to cell receptors, showcasing their potential utility in preventing these viral infections. With this strong set of results, we believe that echinacea could serve as a promising natural remedy or ingredient in functional health foods aimed at reducing the impact of viral respiratory infections.
Read More
9
Echinacea shows effectiveness against influenza
We conducted a well-structured clinical trial to scrutinize the effectiveness of a new Echinacea formulation, named Echinaforce Hotdrink, against oseltamivir, a widely recognized antiviral medication for influenza. This study involved 473 patients who had early symptoms of the flu, allowing us to compare how each treatment influenced recovery.

Participants were given either 5 days of oseltamivir followed by placebo or a 10-day regimen of Echinaforce Hotdrink. By evaluating the proportion of patients who reported their symptoms as absent or mild, we aimed to determine if Echinacea could hold its own against the established antiviral treatment.

Remarkably, we found that Echinaforce Hotdrink was comparable in effectiveness to oseltamivir. Not only did it demonstrate a similar level of symptom relief, but it also seemed to come with a lower risk of complications and adverse effects. This positions Echinacea as a promising option for those seeking natural self-care solutions when facing influenza.
Read More
9
Echinacea's potential against influenza
We delved into the potential of Echinacea purpurea, particularly its standardized extract, to combat influenza viruses. Given concerns about the effectiveness and availability of traditional antiviral treatments like vaccines and medications, especially during outbreaks, our study aimed to understand how this herbal remedy might serve as a helpful alternative.

Through our research, we found that Echinacea was effective in inactivating various strains of the influenza virus, including the highly pathogenic avian influenza and swine-origin H1N1. The extract worked at doses that were close to what is usually recommended for oral intake, showing that even lower concentrations could also have a significant effect.

Interestingly, one of the key findings was that Echinacea appears to disrupt the virus’s ability to enter cells. This means that taking Echinacea could potentially prevent the virus from spreading within the body. Moreover, unlike some antiviral drugs that can lead to resistant strains of the virus, no resistant variants appeared when testing Echinacea. This suggests that it might offer a reliable alternative without the risk of creating drug-resistant viruses.

Overall, we believe that incorporating a standardized Echinacea preparation into flu prevention strategies could be a valuable and cost-effective addition to existing options. It provides another tool in our fight against influenza, reinforcing the importance of exploring natural remedies alongside traditional treatments.
Read More

Most Useful Reviews

10
Effective for recovery
Very effective for influenza. I have repurchased this product multiple times. My boyfriend recovered quickly after using it for just 1-2 days, which prevented a week-long illness. I recommended it to a friend whose child and husband were infected; it worked wonders for them too. Purple Daisy has now become an essential supplement in my home. When infected, I suggest taking 2 pills every 2 hours and several times daily, especially combined with vitamin C for better results.
Read More
9.5
Quick recovery noted
I find it essential for influenza when first feeling unwell. My 14-year-old son improved rapidly after taking it, avoiding the need for Tamiflu. It's an excellent product suitable for the entire family.
Read More
8.8
Cold prevention aid
This is a great aid for preventing colds. During influenza peak periods, I take it daily to bolster my immunity.
Read More

Medical Researches

SCIENTIFIC SCORE
Possibly Effective
Based on 16 Researches
7.9
  • All Researches
9
Echinacea shows promise against influenza
We focused on how echinacea, a well-known wildflower, can combat viruses that commonly cause respiratory infections, specifically influenza A and B, as well as respiratory syncytial virus (RSV). Through a methodical approach, we evaluated the effects of a 60% ethanol extract of echinacea and its active compound, chicoric acid (CA), on these viruses.

Our research utilized various tests to measure the antiviral effectiveness of echinacea. We observed that both the extract and chicoric acid significantly reduced the infectivity of H1N1, IVB, and RSV-A in controlled experiments. Notably, our findings indicated a decrease in viral gene expression and confirmed through microscopy that echinacea's components could limit the ability of these viruses to infect host cells.

Additionally, we found that echinacea's extract and chicoric acid effectively hindered the attachment of H1N1 and IVB viruses to cell receptors, showcasing their potential utility in preventing these viral infections. With this strong set of results, we believe that echinacea could serve as a promising natural remedy or ingredient in functional health foods aimed at reducing the impact of viral respiratory infections.
Read More
We investigated how a commercial product called Immulant, which contains Echinacea and Nigella sativa, impacts the immune response to the H9N2 avian influenza virus in stressed chickens. The study involved several experimental groups including vaccinated and non-vaccinated chickens, some of which were also given dexamethasone to induce stress, while others received Immulant.

After administering Immulant for six weeks following vaccination, we observed significant improvements in various health markers compared to those chickens that did not receive it. Specifically, Immulant showed promise in boosting the immune response after vaccination, enhancing protection against the virus, and reducing stress-induced effects.

The findings suggest that incorporating such herbal treatments could be beneficial for poultry health, particularly in enhancing vaccine efficacy in stressful conditions. This could be an important consideration for poultry farmers looking to bolster their flocks' defenses against influenza.
Read More
9
Echinacea reduces influenza complications
We assessed how Echinacea purpurea, an herbal medicine, affects influenza virus A infections, especially regarding bacterial infections that can follow. Our focus was on the way Echinacea might help mitigate complications caused by influenza, such as pneumonia or bronchitis, which can occur when the viral infection makes the airways more susceptible to bacteria.

Through our research, we learned that when bronchial cells are infected with the influenza virus, they become more attractive to harmful bacteria like Haemophilus influenzae and Staphylococcus aureus. This happens due to an increase in certain surface receptors on the cells, which are like welcoming signs for these bacteria. However, when we introduced Echinacea, we observed a significant reduction in the expression of these receptors, thus preventing bacteria from adhering to the cells.

Additionally, Echinacea appeared to help keep inflammation in check. By reducing the levels of inflammatory markers and certain pathways that lead to inflammation, it potentially lowers the risk of severe respiratory complications. Our findings suggest that Echinacea purpurea could play a crucial role not only in supporting the immune response against influenza but also in reducing the chances of secondary bacterial infections.
Read More
9
Echinacea shows effectiveness against influenza
We conducted a well-structured clinical trial to scrutinize the effectiveness of a new Echinacea formulation, named Echinaforce Hotdrink, against oseltamivir, a widely recognized antiviral medication for influenza. This study involved 473 patients who had early symptoms of the flu, allowing us to compare how each treatment influenced recovery.

Participants were given either 5 days of oseltamivir followed by placebo or a 10-day regimen of Echinaforce Hotdrink. By evaluating the proportion of patients who reported their symptoms as absent or mild, we aimed to determine if Echinacea could hold its own against the established antiviral treatment.

Remarkably, we found that Echinaforce Hotdrink was comparable in effectiveness to oseltamivir. Not only did it demonstrate a similar level of symptom relief, but it also seemed to come with a lower risk of complications and adverse effects. This positions Echinacea as a promising option for those seeking natural self-care solutions when facing influenza.
Read More
9
Echinacea's potential against influenza
We delved into the potential of Echinacea purpurea, particularly its standardized extract, to combat influenza viruses. Given concerns about the effectiveness and availability of traditional antiviral treatments like vaccines and medications, especially during outbreaks, our study aimed to understand how this herbal remedy might serve as a helpful alternative.

Through our research, we found that Echinacea was effective in inactivating various strains of the influenza virus, including the highly pathogenic avian influenza and swine-origin H1N1. The extract worked at doses that were close to what is usually recommended for oral intake, showing that even lower concentrations could also have a significant effect.

Interestingly, one of the key findings was that Echinacea appears to disrupt the virus’s ability to enter cells. This means that taking Echinacea could potentially prevent the virus from spreading within the body. Moreover, unlike some antiviral drugs that can lead to resistant strains of the virus, no resistant variants appeared when testing Echinacea. This suggests that it might offer a reliable alternative without the risk of creating drug-resistant viruses.

Overall, we believe that incorporating a standardized Echinacea preparation into flu prevention strategies could be a valuable and cost-effective addition to existing options. It provides another tool in our fight against influenza, reinforcing the importance of exploring natural remedies alongside traditional treatments.
Read More

User Reviews

USERS' SCORE
Good
Based on 3 Reviews
8.7
  • All Reviews
  • Positive Reviews
  • Negative Reviews
10
Effective for recovery
Very effective for influenza. I have repurchased this product multiple times. My boyfriend recovered quickly after using it for just 1-2 days, which prevented a week-long illness. I recommended it to a friend whose child and husband were infected; it worked wonders for them too. Purple Daisy has now become an essential supplement in my home. When infected, I suggest taking 2 pills every 2 hours and several times daily, especially combined with vitamin C for better results.
Read More
9.5
Quick recovery noted
I find it essential for influenza when first feeling unwell. My 14-year-old son improved rapidly after taking it, avoiding the need for Tamiflu. It's an excellent product suitable for the entire family.
Read More
8.8
Cold prevention aid
This is a great aid for preventing colds. During influenza peak periods, I take it daily to bolster my immunity.
Read More

Frequently Asked Questions

Influenza, commonly referred to as the flu, is a highly contagious viral infection that primarily affects the respiratory system. Caused by influenza viruses, it can lead to mild to severe illness and can result in hospitalization or even death, particularly in vulnerable populations such as the elderly, young children, and individuals with certain health conditions. Symptoms typically include fever, chills, cough, sore throat, body aches, headaches, and fatigue. It's important to note that while many people refer to common colds as the flu, the flu is generally more severe and lasts longer.

Preventing influenza is possible through vaccination, which is recommended annually as the viruses can change from year to year. Other preventive measures include practicing good hygiene, such as regular hand washing and avoiding close contact with infected individuals. If someone does contract the flu, antiviral medications may be prescribed by a healthcare provider, particularly if the treatment begins within the first few days of illness. Understanding the nature of influenza and the importance of preventive measures can help individuals protect themselves and their communities during flu season.

Echinacea is a genus of flowering plants in the daisy family, commonly known for its medicinal properties. There are several species within this genus, but Echinacea purpurea is perhaps the most well-known and widely used, particularly in herbal supplements aimed at supporting immune health. Traditionally, Echinacea has been used by Native American tribes for its purported benefits in fighting infections and reducing symptoms of colds and respiratory illnesses. The plant is characterized by its distinctive purple cone-shaped flowers and is also cultivated for ornamental purposes.

In contemporary use, Echinacea is typically available in various forms, including capsules, teas, extracts, and tinctures. While some studies suggest that Echinacea may help reduce the duration and severity of colds when taken at the first signs of illness, evidence remains mixed, and more research is needed to confirm its effectiveness. As always, it’s advisable to consult with a healthcare professional before starting any new supplement, especially for individuals with allergies to plants in the daisy family or those taking specific medications.

Echinacea, a popular herbal remedy derived from the Echinacea purpurea plant, is often touted for its potential immune-boosting properties. Some studies suggest that Echinacea may help reduce the severity and duration of cold symptoms, though the evidence is less clear regarding its effectiveness against influenza specifically. A meta-analysis of several studies indicated that Echinacea could have a modest benefit in alleviating cold symptoms, but results regarding flu symptoms are mixed. It's important to note that while some individuals may find Echinacea helpful, others may not experience noticeable effects, and more research is needed to determine its efficacy against influenza.

If you're considering using Echinacea as a preventative measure or treatment for flu-like symptoms, it’s a good idea to speak with a healthcare professional, especially if you have underlying health conditions or are taking other medications. While Echinacea is generally considered safe for short-term use, informed choices about its application can help ensure it complements your overall health strategy during flu season.

Based on user reviews, results from this supplement typically appear quite rapidly for influenza. Many reported significant improvements within just 1-2 days of starting the supplement. One user mentioned that their boyfriend recovered quickly after using it, which seemed to prevent a prolonged illness of up to a week ((Read Review)). Another reviewer echoed similar sentiments, noting that their son improved rapidly and was able to avoid more intensive treatments like Tamiflu ((Read Review)).

Overall, the common theme among users appears to be a fast response, suggesting that when taken at the onset of symptoms, this supplement can help mitigate the severity and duration of influenza symptoms effectively. For those seeking timely relief, following recommended dosing guidelines—such as taking a couple of pills every two hours—seems to be a beneficial approach in these cases ((Read Review)).

Recent research indicates that Echinacea, particularly Echinacea purpurea, shows promise as a natural supplement for combating influenza. Studies have suggested that Echinacea may prevent the entry of the influenza virus into host cells and reduce the incidence of respiratory infection symptoms, making it a potential complementary therapy for flu management [1]. Another study demonstrated that Echinacea not only reduced the infectivity of influenza A and B viruses but also limited the ability of these viruses to attach to host cell receptors [2]. Moreover, clinical trials comparing Echinacea to conventional antiviral medication like oseltamivir found that Echinacea could provide comparable symptom relief with potentially fewer adverse effects, positioning it as a viable natural alternative [8].

However, while Echinacea exhibits antiviral properties, it's essential to consider it as part of a multifaceted approach to influenza prevention and treatment rather than a standalone solution. Research highlights that further studies are needed to clearly define Echinacea's efficacy and to understand how its various extracts might work in synergy with other treatments [1], [16]. Overall, the accumulated data suggests that Echinacea could play a supportive role in managing influenza symptoms, making it an interesting supplement to explore for respiratory health.

Based on user reviews, many individuals have reported significant improvements in their influenza symptoms after using this supplement. For instance, one reviewer noted that their boyfriend experienced a rapid recovery within just 1-2 days of starting the regimen, effectively avoiding a prolonged illness that could have lasted a week ((Read Review)). Another user highlighted that their son improved swiftly enough to sidestep more aggressive treatments like Tamiflu, showcasing the supplement's efficacy in providing family-friendly relief ((Read Review)).

Additionally, some users have reported using the supplement proactively during influenza season to bolster their immunity against colds, suggesting its utility beyond just treatment. The consensus from the reviews indicates a trend where users experience faster recovery times when the supplement is taken at the onset of symptoms, reinforcing its role as a guidepost for timely intervention in respiratory illnesses ((Read Review)). However, individual results can vary, and what works for one person may not necessarily yield the same outcomes for another.

Users have reported positive outcomes when combining this supplement with other dietary supplements, especially vitamin C, to enhance its efficacy against influenza. One reviewer highlighted that taking the supplement along with vitamin C resulted in better overall results, suggesting a synergistic effect that may accelerate recovery from illness. For instance, they recommended taking two pills every two hours, particularly when symptoms first appear ((Read Review)). This combination strategy appears to be a common practice among those keen on maximizing their protective measures against influenza.

Moreover, several users have mentioned using the supplement proactively during flu season as a part of their daily regimen to help maintain robust immunity. This preventative approach aligns with their experiences of having family members recover quickly and effectively when symptoms arise, indicating that this supplement serves well not just in treating but also in preventing illness when combined with other supportive vitamins ((Read Review)). Overall, the blend of this supplement with vitamin C seems to resonate well within the user community for managing influenza symptoms.

Based on user reviews, many individuals highlight the importance of dosage when using Echinacea for treating influenza. One user suggests taking 2 pills every 2 hours for optimal effectiveness, especially when paired with vitamin C to enhance results ((Read Review)). Another user also emphasizes that starting Echinacea at the onset of symptoms can lead to rapid recovery, which was the case for their son, who successfully avoided stronger medications like Tamiflu ((Read Review)). Overall, the consensus indicates that timely administration and adjusting the frequency of dosage can play a significant role in the efficacy of Echinacea in managing influenza.

10
Effective for recovery
Very effective for influenza. I have repurchased this product multiple times. My boyfriend recovered quickly after using it for just 1-2 days, which prevented a week-long illness. I recommended it to a friend whose child and husband were infected; it worked wonders for them too. Purple Daisy has now become an essential supplement in my home. When infected, I suggest taking 2 pills every 2 hours and several times daily, especially combined with vitamin C for better results.
9.5
Quick recovery noted
I find it essential for influenza when first feeling unwell. My 14-year-old son improved rapidly after taking it, avoiding the need for Tamiflu. It's an excellent product suitable for the entire family.
8.8
Cold prevention aid
This is a great aid for preventing colds. During influenza peak periods, I take it daily to bolster my immunity.
7
Echinacea shows promise against influenza
We explored the potential of Echinacea purpurea as a natural treatment for influenza A virus (IAV). The research highlighted its effectiveness in preventing the entry or binding of the virus to host cells. This means that Echinacea could potentially stop the virus before it has a chance to invade and multiply within our bodies.

Several studies indicate that while Echinacea shows promise, it should be seen as part of a broader approach to combating IAV. We also noted that other plant extracts, like Silybum marianum and Scutellaria baicalensis, were noted for their antiviral effects, but Echinacea specifically works by blocking the virus's access to cells.

Overall, we found that there is a foundation for considering Echinacea as a complementary therapy for influenza, but further research is needed to fully understand its capabilities and to develop specific treatments. We should be cautious about relying solely on Echinacea, as the fight against flu viruses often requires a multifaceted strategy.
9
Echinacea shows promise against influenza
We focused on how echinacea, a well-known wildflower, can combat viruses that commonly cause respiratory infections, specifically influenza A and B, as well as respiratory syncytial virus (RSV). Through a methodical approach, we evaluated the effects of a 60% ethanol extract of echinacea and its active compound, chicoric acid (CA), on these viruses.

Our research utilized various tests to measure the antiviral effectiveness of echinacea. We observed that both the extract and chicoric acid significantly reduced the infectivity of H1N1, IVB, and RSV-A in controlled experiments. Notably, our findings indicated a decrease in viral gene expression and confirmed through microscopy that echinacea's components could limit the ability of these viruses to infect host cells.

Additionally, we found that echinacea's extract and chicoric acid effectively hindered the attachment of H1N1 and IVB viruses to cell receptors, showcasing their potential utility in preventing these viral infections. With this strong set of results, we believe that echinacea could serve as a promising natural remedy or ingredient in functional health foods aimed at reducing the impact of viral respiratory infections.
9
Echinacea shows effectiveness against influenza
We conducted a well-structured clinical trial to scrutinize the effectiveness of a new Echinacea formulation, named Echinaforce Hotdrink, against oseltamivir, a widely recognized antiviral medication for influenza. This study involved 473 patients who had early symptoms of the flu, allowing us to compare how each treatment influenced recovery.

Participants were given either 5 days of oseltamivir followed by placebo or a 10-day regimen of Echinaforce Hotdrink. By evaluating the proportion of patients who reported their symptoms as absent or mild, we aimed to determine if Echinacea could hold its own against the established antiviral treatment.

Remarkably, we found that Echinaforce Hotdrink was comparable in effectiveness to oseltamivir. Not only did it demonstrate a similar level of symptom relief, but it also seemed to come with a lower risk of complications and adverse effects. This positions Echinacea as a promising option for those seeking natural self-care solutions when facing influenza.
8
Echinacea alkylamides combat inflammation
We investigated how alkylamides, specifically derived from Echinacea purpurea, could help combat the inflammatory response associated with H1N1 influenza A infections. Our study focused on various extracts and isolated alkylamides to see if they could reduce the production of harmful substances like cytokines and chemokines produced by macrophage-like cells when infected with the virus.

Out of seventeen extracts and four specific alkylamides tested, we found that certain alkylamides, such as dodeca-2E,4E-dienoic acid isobutylamide, were particularly effective. These alkylamides significantly reduced levels of TNF-α, PGE₂, and other inflammatory mediators in the infected cells. Interestingly, while some extracts also showed promise in reducing inflammation, others varied widely in their effects—some even stimulating mediator production.

This discrepancy suggests that while alkylamides may hold therapeutic potential, the overall activity of Echinacea extracts can depend on various factors, including preparation methods. Therefore, further research is needed to identify how to maximize the beneficial properties of these compounds in clinical settings and truly harness their effects against influenza A.

References

  1. Arumugam H, Wong KH, Low ZY, Lal S, Choo WS. Plant extracts as a source of antiviral agents against influenza A virus. J Appl Microbiol. 2025. doi:10.1093/jambio/lxaf056
  2. Lee SK, Lee DR, Min DE, Park SH, Kim DG, et al. Ethanolic Extract from (L.) Moench Inhibits Influenza A/B and Respiratory Syncytial Virus Infection : Preventive Agent for Viral Respiratory Infections. Prev Nutr Food Sci. 2024;29:332. doi:10.3746/pnf.2024.29.3.332
  3. Wang X, Chen J, Chan Y, Li S, Li M, et al. Effect of Echinacea purpurea (L.) Moench and its extracts on the immunization outcome of avian influenza vaccine in broilers. J Ethnopharmacol. 2024;319:117306. doi:10.1016/j.jep.2023.117306
  4. Ogal M, Johnston SL, Klein P, Schoop R. Echinacea reduces antibiotic usage in children through respiratory tract infection prevention: a randomized, blinded, controlled clinical trial. Eur J Med Res. 2021;26:33. doi:10.1186/s40001-021-00499-6
  5. Eladl AH, Arafat N, El-Shafei RA, Farag VM, Saleh RM, et al. Comparative immune response and pathogenicity of the H9N2 avian influenza virus after administration of Immulant, based on Echinacea and Nigella sativa, in stressed chickens. Comp Immunol Microbiol Infect Dis. 2019;65:165. doi:10.1016/j.cimid.2019.05.017
  6. Razin MAF, Osman A, Ali MA, Bahgat MM, Maghraby AS. Immune responses to killed reassorted influenza virus supplemented with natural adjuvants. Acta Microbiol Immunol Hung. 2017;64:313. doi:10.1556/030.64.2017.011
  7. Vimalanathan S, Schoop R, Suter A, Hudson J. Prevention of influenza virus induced bacterial superinfection by standardized Echinacea purpurea, via regulation of surface receptor expression in human bronchial epithelial cells. Virus Res. 2017;233:51. doi:10.1016/j.virusres.2017.03.006
  8. Rauš K, Pleschka S, Klein P, Schoop R, Fisher P. Effect of an Echinacea-Based Hot Drink Versus Oseltamivir in Influenza Treatment: A Randomized, Double-Blind, Double-Dummy, Multicenter, Noninferiority Clinical Trial. Curr Ther Res Clin Exp. 2015;77:66. doi:10.1016/j.curtheres.2015.04.001
  9. Di Pierro F, Rapacioli G, Ferrara T, Togni S. Use of a standardized extract from Echinacea angustifolia (Polinacea) for the prevention of respiratory tract infections. Altern Med Rev. 2012;17:36.
  10. Cech NB, Kandhi V, Davis JM, Hamilton A, Eads D, et al. Echinacea and its alkylamides: effects on the influenza A-induced secretion of cytokines, chemokines, and PGE₂ from RAW 264.7 macrophage-like cells. Int Immunopharmacol. 2010;10:1268. doi:10.1016/j.intimp.2010.07.009
  11. Fusco D, Liu X, Savage C, Taur Y, Xiao W, et al. Echinacea purpurea aerial extract alters course of influenza infection in mice. Vaccine. 2010;28:3956. doi:10.1016/j.vaccine.2010.03.047
  12. Pleschka S, Stein M, Schoop R, Hudson JB. Anti-viral properties and mode of action of standardized Echinacea purpurea extract against highly pathogenic avian influenza virus (H5N1, H7N7) and swine-origin H1N1 (S-OIV). Virol J. 2009;6:197. doi:10.1186/1743-422X-6-197
  13. Senchina DS, Wu L, Flinn GN, Konopka del N, McCoy JA, et al. Year-and-a-half old, dried Echinacea roots retain cytokine-modulating capabilities in an in vitro human older adult model of influenza vaccination. Planta Med. 2006;72:1207.
  14. Bodinet C, Mentel R, Wegner U, Lindequist U, Teuscher E, et al. Effect of oral application of an immunomodulating plant extract on Influenza virus type A infection in mice. Planta Med. 2002;68:896.
  15. Puchalski K, Gerstel JA, Jimoh A, Shokoohinia Y, Langland J. Effects of and Alkylamides on Respiratory Virus Replication and IL-8 Expression In Vitro. Molecules. 2025;30. doi:10.3390/molecules30020386
  16. Cech NB, Kandhi V, Davis JM, Hamilton A, Eads D, et al. Echinacea and its alkylamides: effects on the influenza A-induced secretion of cytokines, chemokines, and PGE₂ from RAW 264.7 macrophage-like cells. Int Immunopharmacol. 2010;10:1268. doi:10.1016/j.intimp.2010.07.009
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