What to Know About Colostrum Supplements

5. Does It Actually Work?

Some small studies suggest cow colostrum may help reduce gut infections in athletes and shorten diarrhea in people dealing with certain infections. For example, a clinical trial with healthy athletes found that colostrum helped prevent exercise-induced increases in gut permeability.

Another review noted that supplementation reduced the frequency of diarrhea in clinical trials, though results on duration were mixed.

However, these findings aren’t consistent across broader populations. Many bold claims on social media—like “gut repair” or “immune reprogramming”—haven’t been backed up by large-scale human trials.

Researchers are still investigating whether colostrum provides meaningful benefits beyond those early, targeted studies, especially for generally healthy adults.