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  • Defend
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Immunity Support

Defend

$69.00

Defend is designed to promote a healthy, vibrant immune system while simultaneously targeting immune-related aging hallmarks.

  • Reduces inflammaging
  • Offers protection against acute respiratory infections
  • Helps decrease the duration of respiratory infections
  • Stimulates the activity of white blood cells, which fight infection and repair normal cell function

The five key ingredients in Defend are Quercetin (500mg), Vitamin C (90mg), Beta-glucan (30mg), Zinc (11mg), and Vitamin D3 (1000IU).

Take 2 capsules daily with food (including a healthy fat). Consider starting with 1 capsule per day and progressively increasing your dose. For best results, take for a minimum of six months and beyond.

30-day supply • 60 capsules • Cancel anytime

Defend

$69.00

  • Vegan
  • Non-GMO
  • Gluten free
  • 9 major allergen free
  • Endotoxin-free
  • No Preservatives

Boost immunity at a cellular level

Defend is designed to:

  • Reduce inflammaging

    Quercetin helps remove "zombie cells" (senescent cells) and moderate the expression of pro-inflammatory molecules 1,2,3

    • Javadi et al. Journal of the American College of Nutrition 2017.
    • McCluskey et al. Respiratory Research 2024.
    • Li et al. Nutrients 2016.

  • Offer protection against acute respiratory infections

    Vitamin D3 helps the immune system mount a response to respiratory viruses 9,10

    • Joliffe et al. The Lancet Diabetes & Endocrinology 2021.
    • Aranow. Journal of Investigative Medicine 2011.

  • Help decrease the duration of respiratory infections

    Zinc and beta-glucan help strengthen adaptive and innate immunity 4, 5, 6, 7

    • Stier et al. Nutrition Journal 2014.
    • Mah et al. Journal of Medicinal Food 2020.
    • Haase and Rink. Immunity & Ageing 2009.
    • Nault et al. Cochrane Database of Systematic Reviews 2024.

  • Stimulate the activity of white blood cells, which fight infection and repair normal cell function

    The antioxidant vitamin C helps kick white blood cells into gear 8

    • Van Gorkom et al. Antioxidants (Basel) 2018.

Trusted ingredients

Our pursuit for living healthier, longer is only matched by our relentless pursuit for quality. If an ingredient doesn’t meet our standards, we don’t use it.

  • Formulated by scientists

  • Backed by peer-reviewed research

  • Premium-quality, lab-tested ingredients

  • Third-party safety certified

Research-backed ingredients

Our formulas are made with a powerful combination of ingredients that have been shown in research studies to promote longevity and improve healthspan.

  • Quercetin

    500mg

    Benefits:

    • Lowers inflammaging 11
    • Provides broad immune system support 3

  • Vitamin C

    90mg

    Benefits:

    • Stimulates white blood cells to fight infection and support healthy cell function 12
    • Protects cells from reactive oxygen species 13

  • Beta-glucan

    30mg

    Benefits:

    • Helps strengthen immunity 4
    • Decreases the length and severity of respiratory infections 5

  • Zinc

    11mg

    Benefits:

    • Improves lymphatic function 6
    • Can help shorten the length of a cold 7

  • Vitamin D3

    1000IU

    Benefits:

    • Helps the immune system fight respiratory viruses 14
    • Regulates various aspects of the immune system 10

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Scientist-formulated supplements, expertly stacked, to accelerate your health goals.

Scientific References

  1. Javadi et al. The Effect of Quercetin on Inflammatory Factors and Clinical Symptoms in Women with Rheumatoid Arthritis: A Double-Blind, Randomized Controlled Trial. Journal of the American College of Nutrition 2017
  2. McCluskey et al. Quercetin improves epithelial regeneration from airway basal cells of COPD patients. Respiratory Research 2024
  3. Li et al. Quercetin, Inflammation and Immunity. Nutrients 2016
  4. Stier et al. Immune-modulatory effects of dietary Yeast Beta-1,3/1,6-D-glucan. Nutrition Journal 2014
  5. Mah et al. Soluble and Insoluble Yeast β-Glucan Differentially Affect Upper Respiratory Tract Infection in Marathon Runners: A Double-Blind, Randomized Placebo-Controlled Trial. Journal of Medicinal Food 2020
  6. Haase and Rink. The immune system and the impact of zinc during aging. Immunity & Ageing 2009
  7. Nault et al. Zinc for prevention and treatment of the common cold. Cochrane Database of Systematic Reviews 2024
  8. Van Gorkom et al. Influence of Vitamin C on Lymphocytes: An Overview. Antioxidants (Basel) 2018
  9. Jolliffe et al. Vitamin D supplementation to prevent acute respiratory infections: a systematic review and meta-analysis of aggregate data from randomised controlled trials. The Lancet Diabetes & Endocrinology 2021
  10. Aranow. Vitamin D and the immune system. Journal of Investigative Medicine 2011
  11. Javadi et al. The Effect of Quercetin on Inflammatory Factors and Clinical Symptoms in Women with Rheumatoid Arthritis: A Double-Blind, Randomized Controlled Trial. Journal of the American College of Nutrition 2017
  12. Van Gorkom et al. Influence of Vitamin C on Lymphocytes: An Overview. Antioxidants (Basel) 2018
  13. Beyer. The role of ascorbate in antioxidant protection of biomembranes: interaction with vitamin E and coenzyme Q. Journal of Bioenergetics and Biomembranes 1994
  14. Hahn et al. Vitamin D and marine omega 3 fatty acid supplementation and incident autoimmune disease: VITAL randomized controlled trial. British Medical Journal 2022