Don't Just Boost Your Immune System,
Prevent A Virus Before It Starts


The information contained in this section of the NViroMune website is intended to provide educational information and does NOT make claims or provide medical advice as it relates to any products sold by NViroMune or on this site.

The Ultimate Post-pandemic Supplement.

Prevent A Virus, Flu, And Cold BEFORE It Even Starts

10 Active Ingredients 1 Perfect Formula

By combining the support of 9 nutraceuticals with the power of Zinc, DEFENSE works to combat viruses such as Betacoronaviruses, influenza and the common cold. DEFENSE is a patented formula superior to the simple use of Zinc.
See The Ingredients

Zinc from zinc picolinate

Zinc is a nutrient that people need to help stay healthy. It is found in cells throughout your body and helps strengthen your immune system.

Green Tea Extract Camellia sinensis

Green Tea Extract Camellia sinensis Green tea extract is an excellent source of antioxidants. Catechins, which are found in green tea extract, is a natural antioxidant which helps protect against cell damage. Green tea contains polyphenols, which can help reduce inflammation.

Taxifolin Dihydroquercetin

Taxifolin is a natural flavonoid with potent antioxidant and anti-inflammatory properties. It is closely related to quercetin, but with different properties.

Vitamin A from beta carotene

Vitamin A has many important processes in maintaining your body's health. It plays a vital role in maintaining your body's natural defenses.

Vitamin D3 as cholecalciferol

Vitamin D3 is important to your body's overall health. It is naturally found in animals and is produced by your skin when exposed to sunlight. Vitamin D is essential for bone health and may help with building stronger muscles.

Barberry Root Berberine HCL

Barberry Root Berberine HCL Berberine is a bioactive compound extracted from one of several plants and has several health benefits, including lowering blood sugar and improving heart health.

Selenium from methyl selenocysteine

Selenium is an essential mineral that can act as a powerful antioxidant, reduce inflammation, and boost your body's natural immune system.

Grapefruit Naringenin

Naringenin is a flavonoid found in some fruits, such as citrus and is known to display powerful anti-inflammatory and antioxidant activities. Some studies show that it can have an anti-viral effect.

Copper from copper bisglycinate, copper sulfate

Copper is an essential mineral for heart health, immune health, and bone strength. Copper can also reduce inflammation in the body and help fight infections.

Quercetin Sophora japonica (leaf) / Sunflower phospholipid complex

Quercetin is one of the most abundant antioxidants and can help fight free radicals in your body. It can help lower blood pressure, reduce allergy symptoms and reduce inflammation in the body. Quercetin is a flavonoid naturally found in some fruits, vegetables, grains and teas.


There is no other formula like this on the market. We taken the power of Zinc and combined it with 9 nutraceuticals for a powerful natural response.

DEFENSE Does not just boost your immune system, it actually stops viral entry into the lungs and replication. So it ultimately helps Stop the virus, before it even starts.

The Perfect Formula To Stay Healthy
So You can Enjoy Life's Moments


"I travel for business and don't want to bring a virus home to my family."
"I travel for business and don't want to bring a virus home to my family."
"I am now ready to go to large gathering again but I want to prevent a virus as much as possible."
"I am now ready to go to large gathering again but I want to prevent a virus as much as possible."
"The Holidays are here and I don't want to miss a single day because of a cold or virus."
"The Holidays are here and I don't want to miss a single day because of a cold or virus."
"I am proactive about my health in general and want the best supplement to protect me from a cold or virus."
"I am proactive about my health in general and want the best supplement to protect me from a cold or virus."


Regular price $69.00 Sale price$56.09 SALE
Capsule Size #1, Length 19.4mm
Shipping calculated at checkout.
A proprietary, patent-pending, research combination of key ingredients designed to support your body's immune function and well-being in any environment. NViroMune DEFENSE is an innovative and unique combination of critical nutraceuticals and plant bio-extracts for the ultimate immune support in an uncertain world. We are using high purity high-quality materials with high bioavailability.
Choose The Quantity

The Team Behind DEFENSE Respiratory Support Formula

Discover what our researchers have to say about DEFENSE by clicking the play button.

Prof. Daniel Segal
Professor Daniel Segal received his Bachelor of Science in Biology as well as his PH.D. in Genetics from the Hebrew University of Jerusalem. He then received his Post Doctorate degree in Molecular Genetics from Harvard University.

Professor Segal’s professional career began in 1984 at the Weizmann Institute as a Scientist.
Prof. Ehud Gazit
Professor Ehud Gazit is an Israeli biochemist, biophysicist and nanotechnologist. He is Professor and Endowed Chair at Tel Aviv University and a Member of the Executive Board of the University since 2017.

Gazit received his Bachelor of Science with summa cum laude at Tel Aviv University, and his Ph.D.
Prof. Eran Bacharach
Professor Eran Bacharach received his Bachelor of Science with distinction in Biology, Master of Science with distinction in Microbiology, and Ph. D in Microbiology from the Hebrew University in Jerusalem.

Professor Bacharach has an interest in Molecular Virology with an emphasis on RNA viruses.



covid prevention and immune boost nutraceutical supplement in collaboration with tel aviv university
DEFENSE is created in partnership with the University of Tel Aviv. Below are the scientists and the research behind the product. DEFENSE has undergone a thorough study to bring you a product worth mentioning. View our short video interview with each scientist to learn more about how DEFENSE works.




Protection and Help

High-quality, unprocessed natural material

HIGH QUALITY IS ALWAYS THE TOP PRIORITY. Best quality raw materials are always the basis of all products of ours. Each production batch must undergo input material testing since this is the only way for us to rest assured that we deliver products of the highest possible quality and purity to our customers
World-renowned doctors and scientists

DEFENSE is created in partnership with the University of Tel Aviv and AARDS. Prof. Daniel Segal, Prof. Ehud Gazit, Prof. Eran Bacharach, Prof. Yankel Gabet,  and Dr. Gaylis are top-notch experts in virology, biology, genetics, biochemistry, biophysics, nanotechnology, bone biology, genetics, endocrinology, osteoimmunology, and rheumatology.
GRAS-Approved supplements

Generally Recognized as Safe . A GRAS ingredient is an ingredient that has undergone safety evaluations by experts and has been proven not to cause harm when used as intended. All of the ingredients used in our supplements are completely safe, non-toxic and can be used for a long period of time.

All our formulas are patented.

DEFENSE publication regarding our study
and others white papers

Inhibition of respiratory RNA viruses by a composition of ionophoric polyphenols with metal ions 20 March 2022 - University of Tel Aviv - Pharmaceuticals Journal by by Kreiser, Zaguri, Sachdeva , Zamostiano, Mograbi, Segal, Bacharach, and Gazit.

WIPO Patent Of NViroMune
DEFENSE 2022 - Global

What People Are Saying

Recently, I had an acute resistant case of COVID. I have to say that thanks to a friend who gave me a product NviroMune Defense to take, my symptoms of COVID cleared within 48 hrs. While I simply could have recovered from the virus, I do believe DEFENSE helped that happen quickly, Furthermore, my wife who was with me started taking Defense right away and did not get any symptoms or test positive for COVID. This supplement was safe and we experienced no side effects.

LB, New Jersey, NJ

I am writing to advise you that I have been using your “Defense” product after contracting and testing positive for Covid. I started using it after two days of symptoms and a positive test. I was on vacation with my partner at a relative’s home. He also started doses and although we were in the same room, he did not contract Covid nor did the relatives. This is the second time I have contracted Covid. The symptoms were much milder and did not last nearly as long this time. I attribute that to your product. Sincerely,

RH, Palm Springs, CA

After being safe for about 2 ½ years I became infected with the COVID-19 virus. I am a single mom and sole caregiver of a handicap and severely immune compromised child who has tested negative, so this was terrifying for me since I couldn’t quarantine. I was very fortunate to obtain a bottle of NViroMune Defense the day I tested positive for COVID. Per Dr. Gaylis’s instructions I started taking three capsules of NViroMune Defense twice per day and two capsules twice per day were given to my daughter. My symptoms remained mild, and I was able to get over the virus very quickly and my energy was restored within a week. I truly believe without Defense the virus would have progressed and I would not have been able to return to my normal activities so quickly. Amazingly my daughter remained negative and continues to take NViroMune Defense routinely.

OD, Aventura, FL

With the recent surge of Covid in my practice, I have been overwhelmed by many patients experiencing significant respiratory and other symptoms associated with COVID. Fortunately, I was introduced to a nutraceutical product, NViroMune Defense, by one of my colleagues. This is a completely natural product and despite my initial skepticism, I have been amazed at how it has seemed to decrease the course of symptoms that my COVID patients have experienced. It also has seemingly provided protection to the family members and partners of these patients who have used DEFENSE as a protective measure against the possibility of becoming infected with the virus. I also have had a personal positive experience using the product in my family and hope this unique formulation is used by many more people in our COVID environment for the protection against the virus.

Dr AK M.D, Miami, FL

DEFENSE The science on why we choose our ingredients

We have found that zinc paired with DEFENSE's patented natural active ingredients, helps boost the immune system and protects against viral replication in the lungs and other areas of the body.

Zinc Compound

A Case-Control Study For The Effectiveness Of Oral Zinc In The Prevention And Mitigation Of COVID-19
Zinc is a relatively inexpensive mineral nutrient that is an effective prophylactic agent to prevent and mitigate the potentially deadly symptomatic SARS-CoV-2 infection.

Zn2+ Inhibits Coronavirus and Arterivirus RNA Polymerase Activity In Vitro and Zinc Ionophores Block the Replication of These Viruses in Cell Culture:
Increasing the intracellular Zn2+ concentration with zinc-ionophores like pyrithione (PT) can efficiently impair the replication of a variety of RNA viruses, including poliovirus and influenza virus.

Clinical Significance Summary: Preliminary Results Of A Rapid Review Of Zinc For The Prevention And Treatment Of SARS-CoV-2 And Other Acute Viral Respiratory Infections:
As of 9 June 2020, indirect evidence from other types of viral respiratory infections suggests that zinc may potentially reduce the risk, duration and severity of SARS-CoV-2 infections; particularly for populations at risk of zinc deficiency. Notably, people with chronic disease co-morbidities and older adults are at risk of lower zinc status. Pending the results of SARS-CoV-2 clinical trials, clinicians might consider assessing zinc status as part of a SARS-CoV-2 clinical work-up to determine if short-term zinc supplementation, either orally or intravenously is indicated for those with low or borderline low results, low dietary intake and/or increased needs.

The Potential Impact Of Zinc Supplementation On COVID-19 Pathogenesis:
As zinc is essential to preserve natural tissue barriers such as the respiratory epithelium, prevent pathogen entry, for a balanced function of the immune system and the redox system, zinc deficiency can probably be added to the factors predisposing individuals to infection and detrimental progression of COVID-19. Finally, due to its direct antiviral properties, it can be assumed that zinc administration is beneficial for most of the population, especially those with suboptimal zinc status.

A Hypothesis For The Possible Role Of Zinc In The Immunological Pathways Related To COVID-19 Infection:
As zinc is essential to preserve natural tissue barriers such as the respiratory epithelium, prevent pathogen entry, for a balanced function of the immune system and the redox system, zinc deficiency can probably be added to the factors predisposing individuals to infection and detrimental progression of COVID-19. Finally, due to its direct antiviral properties, it can be assumed that zinc administration is beneficial for most of the population, especially those with suboptimal zinc status.Zinc deficiency may be common and associated with severe infection by helping to enhance the interferon type 1 response to the virus and participates in many regulatory pathways.

20-Week Study Of Clinical Outcomes Of Over-The-Counter COVID-19 Prophylaxis And Treatment:
Role of zinc Zn+2 mediates numerous non-specific and specific immunological functions:16,17 From normal development and function of cells,18,19 including those regulating nonspecific immunity, inter alia, activity of natural killer (NK) cells and neutrophils, and macrophage function; to maintaining expression of tightjunction proteins between lung-lining muco-epithelial cells, blocking entry of pathogens; from increasing cilia length and ciliary beat-frequency in those cells’ mechanical clearance of surface “litter” such as virus particles, and repair of such function in coronavirus-damaged lung cells; to immune response modulation,21,22 tamping down on overshooting inflammatory immune responses22 (thus prevent, for example, high levels of inflammatory mediators such as destructive reactive oxygen and nitrogen species) and normalizing the ratios of diverse immune cell types.

The Role Of Zinc In Antiviral Immunity:
In vitro replication of influenza (PR/8/34) is significantly inhibited by the addition of the zinc ionophore pyrrolidine dithiocarbamate (110), perhaps through inhibition of the RNA-dependent RNA polymerase (RdRp), as had been suggested 30 y earlier (111). In similar fashion, severe acute respiratory syndrome (SARS) coronavirus RdRp template binding and elongation was inhibited by zinc in Vero-E6 cells (60). Moreover, zinc salts were shown to inhibit respiratory syncytial virus, even while zinc was incubated with HEp-2 cells only before infection, and then removed (72).

EGCG, a Green Tea Catechin

EGCG, A Green Tea Polyphenol, Inhibits Human Coronavirus Replication In Vitro
In this report, human coronavirus HCoV-OC43 (beta coronavirus) and HCoV-229E (alpha coronavirus) were used to examine the effect of EGCG on coronavirus. EGCG treatment decreases 3CL-protease activity of HCoV-OC43 and HCoV-229E. Moreover, EGCG treatment decreased HCoV-OC43-induced cytotoxicity. Finally, we found that EGCG treatment decreased the levels of coronavirus RNA and protein in infected cell media. These results indicate that EGCG inhibits coronavirus replication.

Epigallocatechin Gallate From Green Tea Effectively Blocks Infection Of SARS-CoV-2 And New Variants By Inhibiting Spike Binding To ACE2 Receptor
We demonstrated that green tea beverage (GTB) or its major ingredient, epigallocatechin gallate (EGCG), were highly effective in inhibiting infection of live SARS-CoV-2 and human coronavirus (HCoV OC43). In addition, infection of the pseudoviruses with spikes of the new variants (UK-B.1.1.7, SA-B.1.351, and CAB.1.429) was efficiently blocked by GTB or EGCG.

EGCG, A Green Tea Catechin, As A Potential Therapeutic Agent For Symptomatic And Asymptomatic SARS-CoV-2 Infection
In the realms of addressing inflammation and how to effectively target SARS-CoV-2 mediated respiratory distress syndrome, we review in this article the available knowledge on the strategic placement of EGCG in curbing inflammatory signals and how it may serve as a broad spectrum therapeutic in asymptomatic and symptomatic COVID-19 patients.

Antiviral Effects Of Green Tea EGCG And Its Potential Application Against COVID-19
Conclusions EGCG, as the major secondary metabolite polyphenol in Camellia sinensis, has been confirmed to be a multifunctional bioactive molecule with potential for anti-infective, anti-proliferation and antiviral effects. In this review, the antiviral effects of EGCG on DNA, RNA, coronaviruses and other viruses were summarized and discussed. EGCG acts antiviral functions in different stages of infection for both nuclear viruses and cytoplasmic viruses, and so is considered to be a potential alternative agent for multiple viral diseases (Table 2).

An Overview On The Potential Roles Of EGCG In The Treatment Of COVID-19 Infection
Pre-clinical studies have highlighted the antiviral activities of epigallocatechin-3-gallate (EGCG), a catechin primarily found in green tea, against various viruses, including SARS-CoV-2. In this review, we summarize this experimental evidence and highlight the potential use of EGCG as an alternative therapeutic choice for the treatment of SARS-CoV-2 infection.


Potential Clinical Benefits Of Quercetin In The Early Stage Of COVID-19: Results Of A Second, Pilot, Randomized, Controlled And Open-Label Clinical Trial
Quercetin Phytosome® (QP), a novel bioavailable form of quercetin, statistically shortens the timing of molecular test conversion from positive to negative, reducing at the same time symptoms severity and negative predictors of COVID-19.

Quercetin As An Antiviral Agent Inhibits Influenza A Virus (IAV) Entry
In our study, we found quercetin possessed anti-influenza activity. The subsequent mechanism study indicated quercetin showed inhibitory effect during virus entry. Then we found quercetin interacted with influenza hemagglutinin protein and then inhibited viral-cell fusion.

Quercetin As A Natural Therapeutic Candidate For The Treatment Of Influenza Virus
The focus of this review includes viral pathogenesis as well as the application of quercetin and its derivatives as a complementary therapy in controlling influenza and its related symptoms based on the targets. We also touch on the potential of this class of compounds for treatment of SARS-COV-2, the cause of new pandemic.

Anti-Inflammatory Potential Of Quercetin In COVID-19 Treatment:
Quercetin, as an anti-inflammatory, antioxidant, analgesic and inflammatory compound, is probably a potential treatment for severe inflammation and one of the main life-threatening conditions in patients with COVID-19.

Quercetin: New Hype For COVID-19?
Quercetin has long been evaluated for its potential protective effects against cancers, heart disease, and cells that release histamines. The agent promotes SIRT2, which then inhibits the NLRP3 inflammasome assembly involved with COVID-19 infection, said Samuel F. Yanuck, DC, of the Program on Integrative Medicine at the University of North Carolina Chapel Hill School of Medicine, who co-authored a review of emerging research on the subject. Quercetin: New Hype for COVID-19.

Quercetin As A Potential Treatment For COVID-19-Induced Acute Kidney Injury: Based On Network Pharmacology And Molecular Docking Study
In the present study, we investigated the mechanisms and interactions between Quercetin and SARS-CoV-2 targets proteins by using network pharmacology and molecular docking. The renal protective effects of Quercetin on COVID-19-induced AKI may be associated with the blockade of the activation of inflammatory, cell apoptosis-related signaling pathways. Quercetin may also serve as SARS-CoV-2 inhibitor by binding with the active sites of SARS-CoV-2 main protease 3CL and ACE2, therefore suppressing the functions of the proteins to cut the viral life cycle.

Vitamin D

The Role Of Vitamin D In The Age Of COVID-19: A Systematic Review And Meta-Analysis:
Evidence recommends that vitamin D might be a crucial supportive agent for the immune system, mainly in cytokine response regulation against COVID-19. Hence, we carried out a systematic review and meta-analysis in order to maximize the use of everything that exists about the role of vitamin D in the COVID-19.

Vitamin D In Infectious Complications In Critically Ill Patients With Or Without COVID-19:
Vitamin D deficiency has been shown to be associated with worse outcomes of infectious complications, especially in patients admitted to the ICU [8]. The most recognized extra-skeletal action of vitamin D is the regulation of immune function [9]. Vitamin D is an important link between toll-like receptor (TLR) activation, leukocyte accumulation, local inflammation, and antibacterial responses in innate immunity [[10], [11], [12]].

Role Of Vitamin D In Preventing Of COVID-19 Infection, Progression And Severity:
This review discussed the possible roles of vitamin D in reducing the risk of COVID-19 and other acute respiratory tract infections and severity. Moreover, this study determined the correlation of vitamin D levels with COVID-19 cases and deaths in 20 European countries as of 20 May 2020.

Vitamin D Receptor Stimulation To Reduce Acute Respiratory Distress Syndrome (ARDS) In Patients With Coronavirus SARS-CoV-2 Infections:
In this Viewpoint, we summarize how activation of the vitamin D Receptor (VDR) may be able to decrease acute lung injury (ALI) and Acute Respiratory Distress Syndrome (ARDS).

Vitamin D Increases The Antiviral Act ivity Of Bronchial Epithelial Cells In Vitro:
Despite lower vitamin D receptor levels in rhinovirus-infected epithelial cells, exogenous vitamin D increased antiviral defences most likely via cathelicidin and innate interferon pathways.

Taxifolin (Dihydroquercetin)

A team from the Swiss Faculty of Pharmaceutical Sciences at the University of Basel, led by André Fischer, Manuel Sellner, Santhosh Neranjan, Markus A. Lill, and Martin Smieško, has provided the study development free of charge, which is the most comprehensive screening calculation for SARS to date. A list of 11 compounds was isolated. Taxifolin was among them and, according to the researchers, may also inhibit the main coronavirus protease.

Inhibitors For Novel Coronavirus Protease Identified By Virtual Screening Of 687 Million Compounds
In order to find novel inhibitors, we computationally screened a compound library of over 687 million compounds for binding at the recently solved crystal structure of the main protease of SARS-CoV-2. After evaluation of off-target binding, we report a list of 11 drug-like compounds with improved binding free energy to the target protease in contrast to the cocrystallized peptidomimetic lead compound that suffers from poor pharmacokinetic properties. Furthermore, we identified one potent binder with comparable properties from the natural compound library.


Naringenin Is A Powerful Inhibitor Of SARS-CoV-2 Infection In Vitro
1. Naringenin was very effective in inhibiting human coronaviruses infection
2. TPC2, the molecular target of Naringenin, was critical in regulating HCoV229E infection mechanism
3. Naringenin showed a strong antiviral activity against SARS-CoV-2.

Perspective: The Potential Effects Of Naringenin In COVID-19
Among many compounds, naringenin (NAR) a flavonoid present in citrus fruits has been investigated for antiviral and anti-inflammatory properties like reducing viral replication and cytokine production. In this perspective, we summarize NAR potential anti-inflammatory role in COVID-19 associated risk factors and SARS-CoV-2 infection.

Naringenin As A Possible Candidate Against SARS-CoV-2 Infection And In The Pathogenesis Of COVID-19
This review highlights the antiviral potential of naringenin in COVID-19 associated risk factors and its predicted therapeutic targets against SARS-CoV-2 infection.

The Discovery Of Naringenin As Endolysosomal Two-Pore Channel Inhibitor And Its Emerging Role In SARS-CoV-2 Infection
The goal of the present review is to illustrate the rationale that links TPC channels to the mechanism of coronavirus infection, and how their inhibition by Nar could be an efficient pharmacological strategy to fight the current pandemic plague COVID-19.

Naringenin, A Flavanone With Antiviral And Anti-Inflammatory Effects: A Promising Treatment Strategy Against COVID-19
In this review, the promising effects and possible mechanisms of action of naringenin, a citrus-derived flavonoid, against COVID-19 were discussed.