Peer-reviewed publications

  • 4Life Transfer Factor®

    Safety assessment of long-term use of 4Life Transfer Factor using a variety of studies recommended by regulatory authorities. Learn more.

    Beneficial impact of various compositions of transfer factors on the immune system.* Learn more.

    Positive effects of cow colostrum and egg-derived transfer factors Part 1: Non-specific immunomodulation.* Learn more.

    Positive effects of cow colostrum and egg-derived transfer factors Part 2: Antigen-specific immunomodulation.* Learn more.

    Development of an immunological method to evaluate the efficacy of 4Life Transfer Factor against health threats.* Learn more.

  • 4Life Transfer Factor® Collagen

    A review article on natural ingredients that can benefit the skin.* Learn more.

    Efficacy of 4Life Transfer Factor Collagen on skin hydration, firmness, and wrinkles in an 84-day clinical study and telomerase activity in an in vitro study.* Learn more.

  • Pre/o Biotics®

    Laboratory study shows that four weeks of taking Pre/o Biotics has beneficial effects on gut integrity and microbiome health.* Learn more.

    In vitro studies examine different combinations of prebiotics and 4Life Transfer Factor on probiotic growth.* Learn more.

  • 4LifeTransform Burn®

    Laboratory studies showed that 4LifeTransform Burn by itself or with PRO-TF® stimulates fat metabolism and improves body composition.* Learn more.

  • TForce®

    An in vitro study that evaluated the antimicrobial activity of TForce and its individual ingredients.* Learn more.

  • PRO-TF

    Laboratory study that evaluated the effects of PRO-TF ingredients on markers of muscle growth, appetite, and fat metabolism.* Learn more.

    Laboratory study comparing amino acid absorption from hydrolyzed versus concentrated whey protein.* Learn more.

  • Renuvo®

    Effects of Renuvo on the expression of oxidative stress markers while eating a high-fat, high-sugar diet.* Learn more.

  • Gold Factor

    Safety assessment of long-term use of 4Life Gold Factor using a variety of studies recommended by regulatory authorities. Learn more.

  • 4Life Transfer Factor® FeelRite

    An endocannabinoid receptor binding study to optimize the FeelRite formula. Learn more.

    Positive effects of FeelRite towards ex vivo physiological stress markers*. Learn more.

  • RiteStart®

    Clinical study shows RiteStart improves several markers of general and immune health. Learn more.

Third-party studies

  • 4Life Transfer Factor

    Safety assessment of a single oral high-dose of 4Life Transfer Factor® Chewable Tri-Factor® Formula. Learn more.

    Safety assessment of a single oral high-dose of 4Life Transfer Factor® Tri-Factor® Formula and 4Life® Transfer Factor Plus® Tri-Factor® Formula. Learn more.

  • 4Life Transfer Factor Collagen

    Clinical study shows 4Life Transfer Factor Collagen improves skin hydration, firmness, and fine lines and wrinkles in healthy adults.* Learn more.

  • 4Life Transfer Factor Lung
    Evaluation of the protective effects of 4Life Transfer Factor Lung against the negative impact of PM2.5 pollution exposure.* Learn more.
  • Pre/o Biotics

    Discovery of prebiotic properties of colostrum-derived transfer factor.* Learn more.

    A collection of cellular and pre-clinical studies reveal the best combination of prebiotics, probiotics, and 4Life Transfer Factor for gut microbiome health.* Learn more.

In-house studies

  • 4Life Transfer Factor

    Pilot study to assess the effectiveness of a user-friendly instrument in quantifying IgA in human saliva. Learn more.

    Pilot study to obtain a normal range of salivary IgA by using a new, user-friendly instrument for humans. Learn more.

    A study of 4Life Transfer Factor Tri-Factor Formula and RioVida® that found a consistent average 73% increase in salivary Immunoglobulin A (IgA) (immune system strength marker) across all participants within four weeks.* Learn more.

    Summary of multiple studies where blood from healthy donors was incubated with different forms of transfer factors and other 4Life products which showed that 4Life Transfer Factor could calm an overactive immune system.* Learn more.

  • RiteStart®

    Positive influence of RiteStart as a foundational component in a 12-week personalized nutrition program.* Learn more.

  • 4LifeTransform Burn

    Thermogenic properties of 4LifeTransform Burn in a 12-week weight management study.* Learn more.

  • Digest4Life®

    An exploratory study on human gut microbiome modulation after a 25-day dietary cleansing and detoxification supplement regimen.* Learn more.