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    Host Defense Blog

    Elderberry Plus Syrup: Elderberries and Mushroom Mycelium

    Elderberry Plus Syrup: Elderberries and Mushroom Mycelium

    Host Defense® Talks with the Expert – How Elderberry Plus supports an engaged and balanced immune system.*

    Jerry Angelini is Head of Science Education at Fungi Perfecti® and Host Defense®. He has a Masters of Science and Rehabilitation Medicine degree from Boston University, and has been trained in Western Herbalism, Traditional Chinese Medicine and Ayurvedic medicine. With more than 30 years of experience, Jerry is an invaluable source of knowledge and an important part of our team. We sat down with Jerry to discuss how beneficial mushroom mycelium and the fermented substrate used to grow it play a vital role in the Host Defense® product line.

    Elderberry has been under the microscope lately. Some people have shared concerns about the potential for activating the immune response in an abnormally aggressive manner currently being referred to as a cytokine storm (1). When we dive deeply into both the ethnobotanical use of elderberry as well as the research into how it functions, we will find that elderberry is a safe, modulatory immune support for otherwise healthy individuals (2 - 5, 7). Elderberry is also an excellent source of specialized compounds called polyphenols which give elderberries their deep purple color. The polyphenols as well as other compounds in elderberry juice may support other aspects of health and wellness such as cardiovascular function, blood sugar already within the normal range, and antioxidant activity (4, 5).

    The big concern most people have when considering immune support is making sure it doesn’t make things worse. The immune system is designed to go into action when tissue has been injured or when it recognizes other types of threats. The mechanics of the immune response include a set of stages:

    1. Immune cells identify a problem.
    2. Immune cells send signals to increase other immune cell activity, called “recruitment”.
    3. Immune cells destroy a threat and clean up damaged tissue.
    4. Immune cells signal that the problem has been contained and the immune system can stand down to a watchful waiting phase. 

    The cytokine storm is when recruitment signals (known as pro-inflammatory cytokines and chemokines) cascade into an avalanche.  They allow our white blood cells to move around more easily, hone in on problematic locations, and impact things like swelling and temperature regulation. In unusual circumstances referred to as a cytokine storm, the feedback mechanism hard wired in the immune response can become faulty. This can be due to a situation where infection coupled with tissue destruction is so significant that the cytokines and chemokines try to increase repair mechanisms, however, they make things worse. The uncontrolled swelling, fever and secondary tissue damage can be life threatening and even fatal (1).

    Some of the most trusted nutritional supplements support immune functioning by modulating immune activity instead of stimulating immune activity. Immune modulation is a complex process that requires a number of different compounds found in one or more substances.  These multiple compounds allow our immune cells to be recruited to mount an effective response. Modulatory compounds simultaneously support the final stages of the immune response. The immune system is able to then clear up tissue damage. It can also reduce cytokine and chemokine signaling thereby allowing the immune system to return to watchful waiting. Elderberry juice has a number of different compounds that both support immune engagement and modulate the immune response to balance immune activity (2-5).  

    When reading research on the impact that a particular substance may have, there are a number of factors that we will want to take into consideration. One factor is the substance itself: is the tested substance the same substance we may be considering? When looking at the research on elderberry, there are a number of different preparations that have been studied. One is the elderberry juice concentrate. A second is the elderberry extract. A third is the elderberry flower. It is important to recognize that elderberry extract is different than elderberry juice concentrate. Elderberry flower functions very differently than the berry juice or the extract and cannot be considered the same as the berry. When we review the research on the juice concentrate and the extract we can see that there is some overlap with some distinct differences in activity (3 - 5). In the research that looks at mechanism of action, not human clinical outcomes, elderberry extract appears to engage the immune response (3). In a very small sample of people, there was an increase of the cytokines that signal the immune system to recruit other immune cells and work harder.  These recruitment cytokines are inflammatory and help the immune system work harder. These cytokines also initiate the self-regulating processes of the immune response, because the immune system is wired to maintain homeostasis. The presence of these engaging cytokines automatically initiates the clean up process.  

    The research on elderberry juice shows a wider set of mechanisms associated with its activity. The juice concentrate, similar to the extract, appears to increase immune activity (6). At the same time, elderberry juice concentrate has an expanded action when freeze-dried, concentrated, rehydrated, and then subjected to a laboratory process similar to the human digestive and intestinal absorptive process. The elderberry juice concentrate had a very powerful modulatory impact on immune cells (4). The elderberry juice concentrate appeared to trigger the immune cells to decrease engagement signaling and return to a state of watchful waiting. This potential overall support of engagement and then return to watchful waiting is most notably observed in how people feel. In a randomized, double-blind study that tracked how people feel, elderberry juice reduced the discomforts associated with a strongly engaged immune response by an average of four days earlier than those who received the placebo. The participants also reported needing significantly less symptoms-supportive, over the counter products to manage the discomforts. When our immune systems are strongly engaged by the cytokines that make it work hard, they create strong feelings of discomfort. When the immune system modulates those cytokines and moves into a state of watchful waiting, the body returns to a more balanced state of physical sensations. 

    When we complete a thorough review of the literature and take into consideration the extended historical use of particular substances, we can form a more complete and hopefully accurate perspective. The traditional use and research on elderberry indicate that it may be supportive of a balanced immune response. The extract and the juice concentrate both appear to increase the immune system’s ability to function strongly. Furthermore, the research on the juice concentrate expands upon the engagement activity by also supporting modulation, the ability of the immune system to decrease its excitatory state and return to a state of watchful waiting. These findings along with centuries of continuous use in Northern Europe indicate that elderberry is a safe immune supportive and immune balancing substance.

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

    **If you or a loved one has a compromised immune response or autoimmune condition please work with a qualified integrative health care practitioner before using any substance that impacts the immune response.


    1. Microbiol Mol Biol Rev. 2012 Mar; 76(1): 16–32.
    Into the Eye of the Cytokine Storm

    Jennifer R. Tisoncik, Marcus J. Korth, Cameron P. Simmons, Jeremy Farrar, Thomas R. Martin, and Michael G. Katze


    1. J Int Med Res. 2004 Mar-Apr;32(2):132-40.

    Randomized Study of the Efficacy and Safety of Oral Elderberry Extract in the Treatment of Influenza A and B Virus Infections

    Z Zakay-Rones, E Thom, T Wollan, J Wadstein


    1. Eur Cytokine Netw. 2001 Apr-Jun;12(2):290-6.

    The effect of Sambucol, a black elderberry-based, natural product, on the production of human cytokines: I. Inflammatory cytokines.

    Barak V, Halperin T, Kalickman I.


    1. Journal of Functional Foods; Volume 19, Part A, December 2015, Pages 649-660

    Anti-inflammatory effects of gastrointestinal digested Sambucus nigraL. fruit extract analysed in co-cultured intestinal epithelial cells and lipopolysaccharide-stimulated macrophages

    Anna Olejnik, Katarzyna Kowalska, Mariola Olkowicz, Joanna Rychlik, Wojciech Juzwa, Kamila Myszka, Radosław Dembczyński, Wojciech Białas


    1. Journal of Functional Foods; Volume 18, Part B, October 2015, Pages 941-958

    Advanced research on the antioxidant and health benefit of elderberry (Sambucus nigra) in food – a review

    Andrzej Sidor, Anna Gramza-Michałowska


    1. Biosci. Biotechnol. Biochem., 76 (9), 1633–1638, 2012

    Anti-Influenza Virus Effects of Elderberry Juice and Its Fractions

    Emiko KINOSHITA, Kyoko HAYASHI, Hiroshi KATAYAMA, Toshimitsu HAYASHI, and Akio OBATA


    1. Experimental Pathology and Health Sciences 2016;8 (2): 59-66

    Sambucus nigra – a promising natural source for human health

    Sara Cunha, Diana Meireles, Jorge Machado

    Mushrooms and the Immune System

    Mushrooms and the Immune System

    From cognition and mood support to energy and stamina, each mushroom species used in Host Defense® Mushrooms™ supplements offers a unique range of potential health benefits. But one thing that each species has in common is the ability to offer immune support. One of the great things about beneficial mushroom mycelium supplements is their ability to support an engaged and balanced immune response.*

    How do mushroom mycelium supplements support the IMMUNE SYSTEM?

    • The immune system is activated by polysaccharides, terpenes, and other compounds found in mushroom mycelium and fruitbodies.*
    • Each beneficial mushroom species contains a wide variety of nutrients and compounds to support our natural immunity.*
    • The variety and multitude of nutrients found in mushrooms is the key to immunomodulation.*


    • Immunomodulation is the regulatory adjustment of the immune system to bring it into balance.
    • Immune cell modulation is important because we don’t want to simultaneously activate every immune cell at full strength. 

    Beneficial MUSHROOMS are immunomodulators:*

    • Mushrooms regulate the immune system to support long-term health by maintaining a balanced immune response.* 

    HOST DEFENSE® supplements can be used every day to help:

    • Augment and regulate the body’s immune system.*
    • Provide support for daily environmental stressors.*
    • Provide polysaccharides to increase the activity & impact of NK cells and macrophages.* 

    We’ve compiled a chart to quickly reference the range of benefits provided by some of the most popular beneficial mushroom species: Agarikon, Chaga, Cordyceps, Lion’s Mane, Maitake, Reishi, and Turkey Tail:

    Mushroom Benefits at a Glance

    *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.

    Our >10X Commitment to Being Climate Positive

    Our >10X Commitment to Being Climate Positive
    As a result of the efforts by this dedicated team, we have committed to not only being carbon neutral, but climate positive! What does climate positive mean? We’re proud to say that as of 2020, Fungi Perfecti and Host Defense are climate positive, offsetting more than 10 times our baseline emissions: >10X Climate Positive.

    Read more

    Our Commitment to Health and Safety

    Our Commitment to Health and Safety

    In light of the quickly evolving global health crisis created by the Coronavirus (COVID 19), we want to take this opportunity to share the steps we have been taking here at Host Defense and Fungi Perfecti.

    We are closely monitoring the situation, locally and globally, and following the guidance of health officials and experts.  While the global spread of a virus like COVID 19 may take unexpected turns, we can reduce the impact on our families and communities by heeding advice from experts and taking action rooted in scientific evidence.

    On Friday, February 28, founder Paul Stamets and the Fungi Perfecti leadership team made the difficult decision to cancel our company’s attendance at Natural Products Expo West, the largest annual Industry trade show for health and wellness brands.  As important as it is for Host Defense to exhibit at the show, the health and safety of our employees must come first.  As Paul has said from the beginning, ‘people over profit, always’.  After having carefully considered the escalating spread of COVID 19, the organizers of Natural Products Expo West did decide to postpone the event, a decision that Host Defense supports and applauds.

    In everything we do, we are guided by our foundational values.  As an operator of FDA-regulated dietary supplement facilities and controlled laboratories for mycelium production, we have well-established sanitation practices. We also pride ourselves on our company culture, our commitment to putting people ahead of profits, and the relationships we cultivate with our valued retail partners.

    As a result of the spread of COVID19, we’re taking drastic steps to help “flatten the curve.”  These actions include:

    • Increasing cleaning protocols in the offices, warehouses, and production facilities.  
    • Encouraging employees who don’t feel well to stay home.
    • Increasing sick time balances for all employees to ensure a broad safety net.
    • Postponing all in-store product demonstrations and educational seminars.
    • Postponing all company travel through April, upon which time we will reassess.
    It’s important to remember that we live in a global community. We’re all in this together, regardless of the disconnect we sometimes feel when something is happening outside of our immediate town or region or country.  But a virus like COVID 19 sees no borders or boundaries.  When one person becomes infected, then everyone they’ve come into contact with becomes vulnerable to infection.  By prioritizing the health and safety or our team, we are attempting to limit the possible number of vectors in both our local and global community.

    From our family to yours, stay safe, stay healthy, and let’s all look out for one another during this global crisis.