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Immune Resilience: Shielding Yourself in Cold & Flu Season

Friends Enjoying a Healthy Cold & Flu Season Due to Optimal sIgA Production


With the arrival of the cold & flu season, it's pivotal to nurture your immune system, acting as a bulwark against harmful viruses that can lead to infection. In this article, we delve into how you can bolster your defenses by enhancing the levels of a specialized antibody—Secretory IgA (sIgA). Let’s explore how this natural shield protects us from viruses and other pathogens.

Understanding Secretory IgA (sIgA)

Secretory Immunoglobulin A (sIgA) is a crucial antibody that operates on the moist surfaces of our mouth, throat, and sinuses, safeguarding them from the myriad of substances they encounter. It serves as a preventive barrier against infections, minimizing inflammation and damage to the body.1

The Protective Role of sIgA in Cold & Flu Season

Secretory IgA is indispensable during every cold and flu season, shielding areas of our body that are most exposed to external elements. It binds to the mucus layer, neutralizing invaders such as viruses and supporting the health and diversity of beneficial bacteria. It acts as our body's vigilant guardian, eliminating pathogens before they infiltrate our system.1


Healthy Woman Walking Amongst the Fall Leaves - Optimal sIgA Production and Immune Function

Evaluating your sIgA Level: Are You Protected?

It is wise to assess your total salivary sIgA level at least once or twice annually to observe any alterations in your immune resilience. Being proactive about testing and optimizing your sIgA levels prepares you for the cold & flu season.

Strategies to Support sIgA and Enhance Immune Health

Research indicates that a combination of lifestyle modifications and supplements can help maintain optimal sIgA production:*

  1. Nutritional Support such as Zinc, Selenium, and Vitamins E, A, D3, and C.2-9
  2. Herbal Assistance from Adaptogens (Ashwagandha), Astragalus, and Elderberry.10-13
  3. Probiotics, including Lactobacillus spp., Bifidobacterium spp., and Saccharomyces boulardii.13-26
  4. Stress Management Techniques like meditation, therapy dogs, and music.27-36
  5. Regular Moderate Exercise and resistance training.37-40


Healthy Man with an Optimal Saliva sIgA Level Meditating and Doing Yoga during the Cold & Flu Season

InterPlexus Supplements to Support sIgA Production*

Flavo PlexC: A physician-formulated blend of vitamin C and Ashwagandha that aids the mucosal immune system in optimizing sIgA production.*

Flavo PlexC™: A concoction of vitamin C and Ashwagandha that aids the mucosal immune system in optimizing sIgA production.*

Fortéfy: A top-tier blend of dairy-free probiotic strains designed to bolster the immune system.*

Fortéfy™: A top-tier blend of dairy-free probiotic strains designed to bolster the immune system.*

Zinc PlusTM: A scientifically-crafted supplement that combines zinc ascorbate and an organic bioflavonoid complex to support an optimal immune response during the cold and flu season.*

Zinc PlusTM: A scientifically crafted supplement that combines zinc ascorbate and an organic bioflavonoid complex to support an optimal immune response during the cold and flu season.*

Empower Your Immune System

Cultivating immune resilience is more than a defensive tactic against cold and flu; it’s an essential component of holistic well-being. By understanding and enhancing the levels of Secretory IgA, adopting a healthy lifestyle, and utilizing supportive supplements, we can fortify our internal defenses and navigate through the cold & flu season with confidence.*

Always consult with a healthcare professional before beginning a new supplement routine, especially if you take medications or have underlying health conditions.

* These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.



Premenstrual Syndrome (PMS) is one of the most common debilitating disorders that affect women. 95% of women of reproductive age experience symptoms during the premenstrual period, and severe, debilitating PMS symptoms, including premenstrual dysphoric disorder (PMDD), occur in 5% of these women. Approximately 20% of all women experience premenstrual symptoms severe enough to impair their activities of daily life. Thus, PMS is associated with a significant economic burden for individuals and populations due to absenteeism at work and other factors.


If you could choose, would you rather spit into a tube or have a needle jabbed into your arm to measure your hormone levels? We suspect you would rather not get stuck with a needle, and you do have a choice! Saliva hormone testing offers many benefits, including painless collection in the comfort of your home at any time. Saliva hormone tests can help determine the underlying cause(s) of PMS, insomnia, anxiety, fatigue, infertility, migraines, weight gain, hot flashes, hair loss, and many other health concerns.


“Microbial medicine” has evolved significantly in recent years, and we now know that nourishing the microbiome is a potential treatment option and prevention strategy for many health concerns. Everyone harbors between 10 and 100 trillion micro-organisms in their body, and the vast majority of these are in the gut. The gut microbiome and its metabolites play a fundamental role in many bodily functions, including nutrient production, nutrient absorption, immune system regulation, and the defense against infections, including viral infections. The powerful metabolites produced by the organisms in your microbiome are called postbiotics. Research performed during the COVID-19 pandemic demonstrates that decreased diversity of the gut microbiome is associated with prolonged symptoms, delayed viral clearance, immune dysfunction, and increased mortality…


The common cold is the most frequent human illness. Genetics, stress, smoking, nutrient deficiencies, and strenuous physical training can increase the risk of catching a cold. Modern research now confirms that supplemental vitamins, minerals, botanicals, and other natural remedies can decrease the severity and duration of the common cold.*


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