Benefits of Immune¹ Support Card

Key Findings

• Supplementation with selected micronutrients, particularly vitamin C, vitamin D, and zinc, has been associated with modest reductions in the risk or duration of acute respiratory infections. Vitamin C and vitamin D may reduce infection risk and symptom duration, while zinc has demonstrated a substantial reduction in symptom duration in some analyses [1][2][3].
• Vitamins A, C, D, E, B6, and B12, folate, zinc, iron, copper, and selenium play essential and often complementary roles in supporting physical barriers, immune cell development, antibody production, antioxidant defence, and the regulation of immune responses [2][4][5][6][7].
• Herbal ingredients such as Echinacea and Andrographis paniculata have demonstrated immunomodulatory properties, including effects on immune cell activity and cytokine production. Other botanicals commonly used for immune support include elderberry, garlic, and ginger [8][9][11].

Introduction

The immune system is a complex network of physical barriers, immune cells, signalling molecules, and biological processes that protects the body against pathogens. Its normal function depends on an adequate supply of vitamins, minerals, and other bioactive compounds. Insufficient intake or poor nutritional status may impair immune responses and increase susceptibility to infection [2][4][6].

The Immune¹ Support Card combines biotin, folic acid, B vitamins, niacin, pantothenic acid, vitamin C, vitamin E, selenium, zinc, vitamin D3, Andrographis paniculata, citrus bioflavonoids, Echinacea, Ginkgo biloba, Siberian ginseng, and Lactospore®. This report reviews the available scientific evidence supporting the potential contribution of these ingredients to normal immune function, antioxidant protection, and resilience against infectious challenges.

Main Text

Micronutrients Supporting Immune Function

Numerous micronutrients are required for the development, maintenance, and regulation of the immune system. Vitamins A, C, D, E, B6, and B12, together with folate, zinc, iron, copper, and selenium, contribute to several stages of the immune response and often work synergistically [2][4][5][6][7].

These nutrients support:

• the integrity of physical barriers such as the skin and mucous membranes,
• the development and activity of innate immune cells,
• lymphocyte proliferation and antibody production,
• cytokine signalling,
• antioxidant protection, and
• the regulation of inflammatory responses.

A systematic review and meta-analysis of randomized controlled trials evaluated the effects of micronutrient supplementation on influenza and other acute respiratory infections in adults. The analysis found that vitamin D supplementation reduced the risk of acute respiratory infection by approximately 3% and shortened symptom duration by approximately 6% [1].

Vitamin C supplementation was associated with an approximately 4% reduction in infection risk and a 9% reduction in symptom duration. Although zinc supplementation did not significantly reduce the overall risk of developing an acute respiratory infection, it was associated with an approximately 47% reduction in symptom duration [1].

These findings suggest that the effects of individual micronutrients may differ. Some nutrients may primarily support resistance to infection, while others may help reduce the duration or severity of symptoms.

Vitamins C and E

Vitamin C contributes to the normal functioning of the immune system and supports antioxidant defence by helping protect cells against oxidative stress. It also supports several functions of innate and adaptive immune cells [2][10].

Vitamin E is a lipid-soluble antioxidant that helps protect cellular membranes from oxidative damage. Research indicates that vitamins C and E, together with carotenoids, may influence selected aspects of immunity, including innate immune cell activity, lymphocyte proliferation, and delayed-type hypersensitivity responses [10].

Vitamin D3

Vitamin D plays an important role in both innate and adaptive immunity. Immune cells express vitamin D receptors and can respond directly to vitamin D metabolites. Adequate vitamin D status supports antimicrobial defence, immune cell differentiation, and the regulation of inflammatory responses [1][2][5].

Clinical evidence suggests that vitamin D supplementation may provide modest protection against acute respiratory infections, particularly in individuals with low baseline vitamin D status [1].

B Vitamins and Folate

B vitamins support cellular energy metabolism and are also involved in immune cell proliferation, DNA synthesis, antibody production, and the regulation of T-cell responses.

Vitamin B6 is involved in lymphocyte proliferation and cytokine production, while vitamin B12 and folate contribute to DNA synthesis and normal blood cell formation. Deficiencies in these nutrients may impair cytotoxic cellular immunity and alter T-cell function [7].

Zinc and Selenium

Zinc is essential for the development and function of many immune cells, including neutrophils, natural killer cells, macrophages, and lymphocytes. It also contributes to antioxidant defence and the maintenance of normal physical barriers [2][7].

Selenium supports normal immune function through its role in antioxidant enzymes and redox regulation. Inadequate selenium status may affect immune cell activity and the body's ability to manage oxidative stress during infection [2][5][7].

Herbal and Other Bioactive Compounds

In addition to vitamins and minerals, the Immune¹ Support Card contains several botanical ingredients and other bioactive compounds that may complement nutritional immune support.

Echinacea

Echinacea species, including Echinacea purpurea, Echinacea angustifolia, and Echinacea pallida, are widely used in herbal preparations designed to support the immune system.

Research suggests that Echinacea extracts may exert immunomodulatory, antibacterial, and antiviral effects. Proposed mechanisms include stimulation of immune cell activity, modulation of cytokine production, and effects on macrophages, natural killer cells, and other components of innate immunity [8][9].

However, the composition and activity of Echinacea products can vary considerably depending on the plant species, plant part, extraction method, and dosage. Clinical outcomes may therefore differ between formulations.

Andrographis paniculata

Andrographis paniculata is a botanical ingredient traditionally used in preparations intended to support respiratory and immune health. Reviews of clinically investigated natural products identify Andrographis as one of several botanicals with evidence of immunomodulatory activity [11].

Its principal bioactive compounds, including andrographolides, have been studied for potential effects on inflammatory pathways and immune signalling. However, the evidence applies primarily to specific extracts and dosages rather than to every formulation containing Andrographis.

Citrus Bioflavonoids

Citrus bioflavonoids are plant-derived compounds commonly included alongside vitamin C. They possess antioxidant properties and may complement vitamin C by contributing to protection against oxidative stress [12].

Although they are frequently used in immune-support formulations, the literature reviewed for this report does not establish their independent clinical effect within the complete Immune¹ Support Card formulation.

Lactospore®

Lactospore® is a probiotic ingredient based on Bacillus coagulans. Probiotics and prebiotics may support immune function through their interaction with the intestinal microbiota and the gut-associated immune system [4].

The intestinal microbiome plays an important role in immune regulation, barrier integrity, and communication between microbial populations and immune cells. However, the evidence discussed in the reviewed literature relates mainly to probiotics as a broader category rather than specifically evaluating Lactospore® as part of the complete Immune¹ Support Card.

Ginkgo Biloba and Siberian Ginseng

Ginkgo biloba and Siberian ginseng are included in the formulation, but the literature reviewed for this report does not provide detailed human clinical evidence supporting direct immune-related benefits from these ingredients within this specific combination.

Their inclusion may provide broader botanical or adaptogenic support, but stronger conclusions regarding immune function would require formulation-specific clinical research.

Limitations and Considerations

The evidence reviewed supports the importance of adequate micronutrient status for maintaining normal immune function. However, several limitations should be considered.

The effects of supplementation are often influenced by baseline nutritional status. Individuals with a deficiency or inadequate dietary intake may benefit more than those who already have sufficient levels of the relevant nutrients.

The evidence for botanical ingredients is also highly dependent on the specific extract, standardisation, dose, and duration of use. Results obtained with one Echinacea or Andrographis preparation cannot automatically be applied to all products containing those plants.

In addition, the complete combination of vitamins, minerals, probiotics, and botanical extracts contained in the Immune¹ Support Card has not been directly evaluated as a single formulation in the studies reviewed. The available conclusions are therefore based primarily on evidence relating to the individual ingredients or broader categories of immune-supporting nutrients.

Supplementation should complement, rather than replace, a balanced diet, adequate sleep, regular physical activity, and other healthy lifestyle practices that contribute to normal immune function.

Conclusion

The available scientific literature supports the important role of several ingredients included in the Immune¹ Support Card in maintaining normal immune function.

Vitamins A, C, D, E, B6, and B12, together with folate, zinc, iron, copper, and selenium, contribute to physical barrier integrity, immune cell development, antibody production, antioxidant defence, and the regulation of immune responses [2][4][5][6][7].

Among the ingredients reviewed, vitamin C, vitamin D, and zinc have the most direct clinical evidence relating to acute respiratory infections. Vitamin C and vitamin D supplementation have demonstrated modest reductions in infection risk or symptom duration, while zinc has shown a notable reduction in the duration of respiratory symptoms in some analyses [1].

Botanical ingredients such as Echinacea and Andrographis paniculata may provide additional immunomodulatory support through effects on immune cell activity, cytokine signalling, and inflammatory pathways [8][9][11]. Citrus bioflavonoids offer antioxidant support, while Lactospore® may contribute indirectly through the relationship between the intestinal microbiota and immune function [4][12].

Although the complete Immune¹ Support Card formulation has not been evaluated in a dedicated clinical trial, the available evidence for its individual ingredients suggests complementary roles in supporting normal immune function, antioxidant protection, and nutritional resilience. Supplementation may be particularly relevant when dietary intake or micronutrient status is inadequate and should be used alongside a balanced diet and healthy lifestyle.

References

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2. AF Gombart et al. A Review of Micronutrients and the Immune System: Working in Harmony to Reduce the Risk of Infection. Nutrients (2020). https://pubmed.ncbi.nlm.nih.gov/31963293/
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8. Natural Immune Boosters: A Review of Ten Key Herbs for Enhancing Immune Function. Australian Herbal Insight (2019). https://publishing.emanresearch.org/Journal/Abstract/ahi-1120051
9. F Ahmadi et al. Phytochemistry, Mechanisms, and Preclinical Studies of Echinacea Extracts in Modulating Immune Responses to Bacterial and Viral Infections: A Comprehensive Review. Antibiotics (2024). https://pubmed.ncbi.nlm.nih.gov/39452214/
10. AL Webb et al. Update: Effects of Antioxidant and Non-antioxidant Vitamin Supplementation on Immune Function. Nutrition Reviews (2007). https://pubmed.ncbi.nlm.nih.gov/17566547/
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