immunoglobulin — answers to IgG, often from bovine colostrum or serum
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A class of antibody proteins, typically derived from bovine colostrum or serum and concentrated for supplement use.
Why it’s used
Taken to support gut lining integrity and immune defenses, particularly in athletes or people prone to frequent minor infections.
What the evidence is for
supporting gut barrier function and reducing respiratory infection frequency in athletes.
What the evidence says
A systematic review of bovine colostrum, a common immunoglobulin source, found some evidence of benefit for gut barrier function and reducing upper respiratory infection frequency in specific populations such as athletes, though study quality and sizes vary and results are not uniformly positive across all outcomes studied.
Context
Much of the supporting research examines whole bovine colostrum rather than isolated immunoglobulin, and benefits appear concentrated in specific groups such as endurance athletes rather than the general population.
Educational information, not medical or safety advice. Consult a professional for allergies or medical concerns.